diff --git a/openpype/hosts/aftereffects/plugins/create/create_render.py b/openpype/hosts/aftereffects/plugins/create/create_render.py
index dcf424b44f..fbe600ae68 100644
--- a/openpype/hosts/aftereffects/plugins/create/create_render.py
+++ b/openpype/hosts/aftereffects/plugins/create/create_render.py
@@ -164,7 +164,7 @@ class RenderCreator(Creator):
                 api.get_stub().rename_item(comp_id,
                                            new_comp_name)
 
-    def apply_settings(self, project_settings, system_settings):
+    def apply_settings(self, project_settings):
         plugin_settings = (
             project_settings["aftereffects"]["create"]["RenderCreator"]
         )
diff --git a/openpype/hosts/fusion/deploy/Scripts/Comp/OpenPype/32bit/backgrounds_selected_to32bit.py b/openpype/hosts/fusion/deploy/Scripts/Comp/OpenPype/32bit/backgrounds_selected_to32bit.py
deleted file mode 100644
index 1a0a9911ea..0000000000
--- a/openpype/hosts/fusion/deploy/Scripts/Comp/OpenPype/32bit/backgrounds_selected_to32bit.py
+++ /dev/null
@@ -1,16 +0,0 @@
-from openpype.hosts.fusion.api import (
-    comp_lock_and_undo_chunk,
-    get_current_comp
-)
-
-
-def main():
-    comp = get_current_comp()
-    """Set all selected backgrounds to 32 bit"""
-    with comp_lock_and_undo_chunk(comp, 'Selected Backgrounds to 32bit'):
-        tools = comp.GetToolList(True, "Background").values()
-        for tool in tools:
-            tool.Depth = 5
-
-
-main()
diff --git a/openpype/hosts/fusion/deploy/Scripts/Comp/OpenPype/32bit/backgrounds_to32bit.py b/openpype/hosts/fusion/deploy/Scripts/Comp/OpenPype/32bit/backgrounds_to32bit.py
deleted file mode 100644
index c2eea505e5..0000000000
--- a/openpype/hosts/fusion/deploy/Scripts/Comp/OpenPype/32bit/backgrounds_to32bit.py
+++ /dev/null
@@ -1,16 +0,0 @@
-from openpype.hosts.fusion.api import (
-    comp_lock_and_undo_chunk,
-    get_current_comp
-)
-
-
-def main():
-    comp = get_current_comp()
-    """Set all backgrounds to 32 bit"""
-    with comp_lock_and_undo_chunk(comp, 'Backgrounds to 32bit'):
-        tools = comp.GetToolList(False, "Background").values()
-        for tool in tools:
-            tool.Depth = 5
-
-
-main()
diff --git a/openpype/hosts/fusion/deploy/Scripts/Comp/OpenPype/32bit/loaders_selected_to32bit.py b/openpype/hosts/fusion/deploy/Scripts/Comp/OpenPype/32bit/loaders_selected_to32bit.py
deleted file mode 100644
index 2118767f4d..0000000000
--- a/openpype/hosts/fusion/deploy/Scripts/Comp/OpenPype/32bit/loaders_selected_to32bit.py
+++ /dev/null
@@ -1,16 +0,0 @@
-from openpype.hosts.fusion.api import (
-    comp_lock_and_undo_chunk,
-    get_current_comp
-)
-
-
-def main():
-    comp = get_current_comp()
-    """Set all selected loaders to 32 bit"""
-    with comp_lock_and_undo_chunk(comp, 'Selected Loaders to 32bit'):
-        tools = comp.GetToolList(True, "Loader").values()
-        for tool in tools:
-            tool.Depth = 5
-
-
-main()
diff --git a/openpype/hosts/fusion/deploy/Scripts/Comp/OpenPype/32bit/loaders_to32bit.py b/openpype/hosts/fusion/deploy/Scripts/Comp/OpenPype/32bit/loaders_to32bit.py
deleted file mode 100644
index 7dd1f66a5e..0000000000
--- a/openpype/hosts/fusion/deploy/Scripts/Comp/OpenPype/32bit/loaders_to32bit.py
+++ /dev/null
@@ -1,16 +0,0 @@
-from openpype.hosts.fusion.api import (
-    comp_lock_and_undo_chunk,
-    get_current_comp
-)
-
-
-def main():
-    comp = get_current_comp()
-    """Set all loaders to 32 bit"""
-    with comp_lock_and_undo_chunk(comp, 'Loaders to 32bit'):
-        tools = comp.GetToolList(False, "Loader").values()
-        for tool in tools:
-            tool.Depth = 5
-
-
-main()
diff --git a/openpype/hosts/fusion/deploy/Scripts/Comp/OpenPype/switch_ui.py b/openpype/hosts/fusion/deploy/Scripts/Comp/OpenPype/switch_ui.py
deleted file mode 100644
index 87322235f5..0000000000
--- a/openpype/hosts/fusion/deploy/Scripts/Comp/OpenPype/switch_ui.py
+++ /dev/null
@@ -1,200 +0,0 @@
-import os
-import sys
-import glob
-import logging
-
-from qtpy import QtWidgets, QtCore
-
-import qtawesome as qta
-
-from openpype.client import get_assets
-from openpype import style
-from openpype.pipeline import (
-    install_host,
-    get_current_project_name,
-)
-from openpype.hosts.fusion import api
-from openpype.pipeline.context_tools import get_workdir_from_session
-
-log = logging.getLogger("Fusion Switch Shot")
-
-
-class App(QtWidgets.QWidget):
-
-    def __init__(self, parent=None):
-
-        ################################################
-        # |---------------------| |------------------| #
-        # |Comp                 | |Asset             | #
-        # |[..][              v]| |[               v]| #
-        # |---------------------| |------------------| #
-        # | Update existing comp [ ]                 | #
-        # |------------------------------------------| #
-        # |                Switch                    | #
-        # |------------------------------------------| #
-        ################################################
-
-        QtWidgets.QWidget.__init__(self, parent)
-
-        layout = QtWidgets.QVBoxLayout()
-
-        # Comp related input
-        comp_hlayout = QtWidgets.QHBoxLayout()
-        comp_label = QtWidgets.QLabel("Comp file")
-        comp_label.setFixedWidth(50)
-        comp_box = QtWidgets.QComboBox()
-
-        button_icon = qta.icon("fa.folder", color="white")
-        open_from_dir = QtWidgets.QPushButton()
-        open_from_dir.setIcon(button_icon)
-
-        comp_box.setFixedHeight(25)
-        open_from_dir.setFixedWidth(25)
-        open_from_dir.setFixedHeight(25)
-
-        comp_hlayout.addWidget(comp_label)
-        comp_hlayout.addWidget(comp_box)
-        comp_hlayout.addWidget(open_from_dir)
-
-        # Asset related input
-        asset_hlayout = QtWidgets.QHBoxLayout()
-        asset_label = QtWidgets.QLabel("Shot")
-        asset_label.setFixedWidth(50)
-
-        asset_box = QtWidgets.QComboBox()
-        asset_box.setLineEdit(QtWidgets.QLineEdit())
-        asset_box.setFixedHeight(25)
-
-        refresh_icon = qta.icon("fa.refresh", color="white")
-        refresh_btn = QtWidgets.QPushButton()
-        refresh_btn.setIcon(refresh_icon)
-
-        asset_box.setFixedHeight(25)
-        refresh_btn.setFixedWidth(25)
-        refresh_btn.setFixedHeight(25)
-
-        asset_hlayout.addWidget(asset_label)
-        asset_hlayout.addWidget(asset_box)
-        asset_hlayout.addWidget(refresh_btn)
-
-        # Options
-        options = QtWidgets.QHBoxLayout()
-        options.setAlignment(QtCore.Qt.AlignLeft)
-
-        current_comp_check = QtWidgets.QCheckBox()
-        current_comp_check.setChecked(True)
-        current_comp_label = QtWidgets.QLabel("Use current comp")
-
-        options.addWidget(current_comp_label)
-        options.addWidget(current_comp_check)
-
-        accept_btn = QtWidgets.QPushButton("Switch")
-
-        layout.addLayout(options)
-        layout.addLayout(comp_hlayout)
-        layout.addLayout(asset_hlayout)
-        layout.addWidget(accept_btn)
-
-        self._open_from_dir = open_from_dir
-        self._comps = comp_box
-        self._assets = asset_box
-        self._use_current = current_comp_check
-        self._accept_btn = accept_btn
-        self._refresh_btn = refresh_btn
-
-        self.setWindowTitle("Fusion Switch Shot")
-        self.setLayout(layout)
-
-        self.resize(260, 140)
-        self.setMinimumWidth(260)
-        self.setFixedHeight(140)
-
-        self.connections()
-
-        # Update ui to correct state
-        self._on_use_current_comp()
-        self._refresh()
-
-    def connections(self):
-        self._use_current.clicked.connect(self._on_use_current_comp)
-        self._open_from_dir.clicked.connect(self._on_open_from_dir)
-        self._refresh_btn.clicked.connect(self._refresh)
-        self._accept_btn.clicked.connect(self._on_switch)
-
-    def _on_use_current_comp(self):
-        state = self._use_current.isChecked()
-        self._open_from_dir.setEnabled(not state)
-        self._comps.setEnabled(not state)
-
-    def _on_open_from_dir(self):
-
-        start_dir = get_workdir_from_session()
-        comp_file, _ = QtWidgets.QFileDialog.getOpenFileName(
-            self, "Choose comp", start_dir)
-
-        if not comp_file:
-            return
-
-        # Create completer
-        self.populate_comp_box([comp_file])
-        self._refresh()
-
-    def _refresh(self):
-        # Clear any existing items
-        self._assets.clear()
-
-        asset_names = self.collect_asset_names()
-        completer = QtWidgets.QCompleter(asset_names)
-
-        self._assets.setCompleter(completer)
-        self._assets.addItems(asset_names)
-
-    def _on_switch(self):
-
-        if not self._use_current.isChecked():
-            file_name = self._comps.itemData(self._comps.currentIndex())
-        else:
-            comp = api.get_current_comp()
-            file_name = comp.GetAttrs("COMPS_FileName")
-
-        asset = self._assets.currentText()
-
-        import colorbleed.scripts.fusion_switch_shot as switch_shot
-        switch_shot.switch(asset_name=asset, filepath=file_name, new=True)
-
-    def collect_slap_comps(self, directory):
-        items = glob.glob("{}/*.comp".format(directory))
-        return items
-
-    def collect_asset_names(self):
-        project_name = get_current_project_name()
-        asset_docs = get_assets(project_name, fields=["name"])
-        asset_names = {
-            asset_doc["name"]
-            for asset_doc in asset_docs
-        }
-        return list(asset_names)
-
-    def populate_comp_box(self, files):
-        """Ensure we display the filename only but the path is stored as well
-
-        Args:
-            files (list): list of full file path [path/to/item/item.ext,]
-
-        Returns:
-            None
-        """
-
-        for f in files:
-            filename = os.path.basename(f)
-            self._comps.addItem(filename, userData=f)
-
-
-if __name__ == '__main__':
-    install_host(api)
-
-    app = QtWidgets.QApplication(sys.argv)
-    window = App()
-    window.setStyleSheet(style.load_stylesheet())
-    window.show()
-    sys.exit(app.exec_())
diff --git a/openpype/hosts/fusion/deploy/Scripts/Comp/OpenPype/update_loader_ranges.py b/openpype/hosts/fusion/deploy/Scripts/Comp/OpenPype/update_loader_ranges.py
deleted file mode 100644
index 3d2d1ecfa6..0000000000
--- a/openpype/hosts/fusion/deploy/Scripts/Comp/OpenPype/update_loader_ranges.py
+++ /dev/null
@@ -1,40 +0,0 @@
-"""Forces Fusion to 'retrigger' the Loader to update.
-
-Warning:
-    This might change settings like 'Reverse', 'Loop', trims and other
-    settings of the Loader. So use this at your own risk.
-
-"""
-from openpype.hosts.fusion.api.pipeline import (
-    get_current_comp,
-    comp_lock_and_undo_chunk
-)
-
-
-def update_loader_ranges():
-    comp = get_current_comp()
-    with comp_lock_and_undo_chunk(comp, "Reload clip time ranges"):
-        tools = comp.GetToolList(True, "Loader").values()
-        for tool in tools:
-
-            # Get tool attributes
-            tool_a = tool.GetAttrs()
-            clipTable = tool_a['TOOLST_Clip_Name']
-            altclipTable = tool_a['TOOLST_AltClip_Name']
-            startTime = tool_a['TOOLNT_Clip_Start']
-            old_global_in = tool.GlobalIn[comp.CurrentTime]
-
-            # Reapply
-            for index, _ in clipTable.items():
-                time = startTime[index]
-                tool.Clip[time] = tool.Clip[time]
-
-            for index, _ in altclipTable.items():
-                time = startTime[index]
-                tool.ProxyFilename[time] = tool.ProxyFilename[time]
-
-            tool.GlobalIn[comp.CurrentTime] = old_global_in
-
-
-if __name__ == '__main__':
-    update_loader_ranges()
diff --git a/openpype/hosts/fusion/deploy/fusion_shared.prefs b/openpype/hosts/fusion/deploy/fusion_shared.prefs
index b379ea7c66..93b08aa886 100644
--- a/openpype/hosts/fusion/deploy/fusion_shared.prefs
+++ b/openpype/hosts/fusion/deploy/fusion_shared.prefs
@@ -5,7 +5,7 @@ Global = {
     Map = {
       ["OpenPype:"] = "$(OPENPYPE_FUSION)/deploy",
       ["Config:"] = "UserPaths:Config;OpenPype:Config",
-      ["Scripts:"] = "UserPaths:Scripts;Reactor:System/Scripts;OpenPype:Scripts",
+      ["Scripts:"] = "UserPaths:Scripts;Reactor:System/Scripts",
     },
   },
   Script = {
diff --git a/openpype/hosts/fusion/plugins/create/create_saver.py b/openpype/hosts/fusion/plugins/create/create_saver.py
index 04898d0a45..39edca4de3 100644
--- a/openpype/hosts/fusion/plugins/create/create_saver.py
+++ b/openpype/hosts/fusion/plugins/create/create_saver.py
@@ -30,10 +30,6 @@ class CreateSaver(NewCreator):
     instance_attributes = [
         "reviewable"
     ]
-    default_variants = [
-        "Main",
-        "Mask"
-    ]
 
     # TODO: This should be renamed together with Nuke so it is aligned
     temp_rendering_path_template = (
@@ -250,11 +246,7 @@ class CreateSaver(NewCreator):
             label="Review",
         )
 
-    def apply_settings(
-        self,
-        project_settings,
-        system_settings
-    ):
+    def apply_settings(self, project_settings):
         """Method called on initialization of plugin to apply settings."""
 
         # plugin settings
diff --git a/openpype/hosts/houdini/api/plugin.py b/openpype/hosts/houdini/api/plugin.py
index 70c837205e..730a627dc3 100644
--- a/openpype/hosts/houdini/api/plugin.py
+++ b/openpype/hosts/houdini/api/plugin.py
@@ -296,7 +296,7 @@ class HoudiniCreator(NewCreator, HoudiniCreatorBase):
         """
         return [hou.ropNodeTypeCategory()]
 
-    def apply_settings(self, project_settings, system_settings):
+    def apply_settings(self, project_settings):
         """Method called on initialization of plugin to apply settings."""
 
         settings_name = self.settings_name
diff --git a/openpype/hosts/maya/api/plugin.py b/openpype/hosts/maya/api/plugin.py
index 00d6602ef9..3f383fafb8 100644
--- a/openpype/hosts/maya/api/plugin.py
+++ b/openpype/hosts/maya/api/plugin.py
@@ -260,7 +260,7 @@ class MayaCreator(NewCreator, MayaCreatorBase):
                     default=True)
         ]
 
-    def apply_settings(self, project_settings, system_settings):
+    def apply_settings(self, project_settings):
         """Method called on initialization of plugin to apply settings."""
 
         settings_name = self.settings_name
diff --git a/openpype/hosts/maya/plugins/create/create_animation.py b/openpype/hosts/maya/plugins/create/create_animation.py
index 214ac18aef..115c73c0d3 100644
--- a/openpype/hosts/maya/plugins/create/create_animation.py
+++ b/openpype/hosts/maya/plugins/create/create_animation.py
@@ -81,10 +81,8 @@ class CreateAnimation(plugin.MayaHiddenCreator):
 
         return defs
 
-    def apply_settings(self, project_settings, system_settings):
-        super(CreateAnimation, self).apply_settings(
-            project_settings, system_settings
-        )
+    def apply_settings(self, project_settings):
+        super(CreateAnimation, self).apply_settings(project_settings)
         # Hardcoding creator to be enabled due to existing settings would
         # disable the creator causing the creator plugin to not be
         # discoverable.
diff --git a/openpype/hosts/maya/plugins/create/create_render.py b/openpype/hosts/maya/plugins/create/create_render.py
index cc5c1eb205..6266689af4 100644
--- a/openpype/hosts/maya/plugins/create/create_render.py
+++ b/openpype/hosts/maya/plugins/create/create_render.py
@@ -34,7 +34,7 @@ class CreateRenderlayer(plugin.RenderlayerCreator):
     render_settings = {}
 
     @classmethod
-    def apply_settings(cls, project_settings, system_settings):
+    def apply_settings(cls, project_settings):
         cls.render_settings = project_settings["maya"]["RenderSettings"]
 
     def create(self, subset_name, instance_data, pre_create_data):
diff --git a/openpype/hosts/maya/plugins/create/create_unreal_skeletalmesh.py b/openpype/hosts/maya/plugins/create/create_unreal_skeletalmesh.py
index 4e2a99eced..3c9a79156a 100644
--- a/openpype/hosts/maya/plugins/create/create_unreal_skeletalmesh.py
+++ b/openpype/hosts/maya/plugins/create/create_unreal_skeletalmesh.py
@@ -21,7 +21,7 @@ class CreateUnrealSkeletalMesh(plugin.MayaCreator):
     # Defined in settings
     joint_hints = set()
 
-    def apply_settings(self, project_settings, system_settings):
+    def apply_settings(self, project_settings):
         """Apply project settings to creator"""
         settings = (
             project_settings["maya"]["create"]["CreateUnrealSkeletalMesh"]
diff --git a/openpype/hosts/maya/plugins/create/create_unreal_staticmesh.py b/openpype/hosts/maya/plugins/create/create_unreal_staticmesh.py
index 3f96d91a54..025b39fa55 100644
--- a/openpype/hosts/maya/plugins/create/create_unreal_staticmesh.py
+++ b/openpype/hosts/maya/plugins/create/create_unreal_staticmesh.py
@@ -16,7 +16,7 @@ class CreateUnrealStaticMesh(plugin.MayaCreator):
     # Defined in settings
     collision_prefixes = []
 
-    def apply_settings(self, project_settings, system_settings):
+    def apply_settings(self, project_settings):
         """Apply project settings to creator"""
         settings = project_settings["maya"]["create"]["CreateUnrealStaticMesh"]
         self.collision_prefixes = settings["collision_prefixes"]
diff --git a/openpype/hosts/maya/plugins/create/create_vrayscene.py b/openpype/hosts/maya/plugins/create/create_vrayscene.py
index d601dceb54..2726979d30 100644
--- a/openpype/hosts/maya/plugins/create/create_vrayscene.py
+++ b/openpype/hosts/maya/plugins/create/create_vrayscene.py
@@ -22,7 +22,7 @@ class CreateVRayScene(plugin.RenderlayerCreator):
     singleton_node_name = "vraysceneMain"
 
     @classmethod
-    def apply_settings(cls, project_settings, system_settings):
+    def apply_settings(cls, project_settings):
         cls.render_settings = project_settings["maya"]["RenderSettings"]
 
     def create(self, subset_name, instance_data, pre_create_data):
diff --git a/openpype/hosts/nuke/api/plugin.py b/openpype/hosts/nuke/api/plugin.py
index 6d48c09d60..a0e1525cd0 100644
--- a/openpype/hosts/nuke/api/plugin.py
+++ b/openpype/hosts/nuke/api/plugin.py
@@ -379,11 +379,7 @@ class NukeWriteCreator(NukeCreator):
                 sys.exc_info()[2]
             )
 
-    def apply_settings(
-        self,
-        project_settings,
-        system_settings
-    ):
+    def apply_settings(self, project_settings):
         """Method called on initialization of plugin to apply settings."""
 
         # plugin settings
diff --git a/openpype/hosts/photoshop/plugins/create/create_flatten_image.py b/openpype/hosts/photoshop/plugins/create/create_flatten_image.py
index 3bc61c8184..9d4189a1a3 100644
--- a/openpype/hosts/photoshop/plugins/create/create_flatten_image.py
+++ b/openpype/hosts/photoshop/plugins/create/create_flatten_image.py
@@ -98,7 +98,7 @@ class AutoImageCreator(PSAutoCreator):
             )
         ]
 
-    def apply_settings(self, project_settings, system_settings):
+    def apply_settings(self, project_settings):
         plugin_settings = (
             project_settings["photoshop"]["create"]["AutoImageCreator"]
         )
diff --git a/openpype/hosts/photoshop/plugins/create/create_image.py b/openpype/hosts/photoshop/plugins/create/create_image.py
index f3165fca57..8d3ac9f459 100644
--- a/openpype/hosts/photoshop/plugins/create/create_image.py
+++ b/openpype/hosts/photoshop/plugins/create/create_image.py
@@ -171,7 +171,7 @@ class ImageCreator(Creator):
             )
         ]
 
-    def apply_settings(self, project_settings, system_settings):
+    def apply_settings(self, project_settings):
         plugin_settings = (
             project_settings["photoshop"]["create"]["ImageCreator"]
         )
diff --git a/openpype/hosts/photoshop/plugins/create/create_review.py b/openpype/hosts/photoshop/plugins/create/create_review.py
index 064485d465..63751d94e4 100644
--- a/openpype/hosts/photoshop/plugins/create/create_review.py
+++ b/openpype/hosts/photoshop/plugins/create/create_review.py
@@ -18,7 +18,7 @@ class ReviewCreator(PSAutoCreator):
         it will get recreated in next publish either way).
         """
 
-    def apply_settings(self, project_settings, system_settings):
+    def apply_settings(self, project_settings):
         plugin_settings = (
             project_settings["photoshop"]["create"]["ReviewCreator"]
         )
diff --git a/openpype/hosts/photoshop/plugins/create/create_workfile.py b/openpype/hosts/photoshop/plugins/create/create_workfile.py
index d498f0549c..1b255de3a3 100644
--- a/openpype/hosts/photoshop/plugins/create/create_workfile.py
+++ b/openpype/hosts/photoshop/plugins/create/create_workfile.py
@@ -19,7 +19,7 @@ class WorkfileCreator(PSAutoCreator):
         in next publish automatically).
         """
 
-    def apply_settings(self, project_settings, system_settings):
+    def apply_settings(self, project_settings):
         plugin_settings = (
             project_settings["photoshop"]["create"]["WorkfileCreator"]
         )
diff --git a/openpype/hosts/traypublisher/plugins/create/create_movie_batch.py b/openpype/hosts/traypublisher/plugins/create/create_movie_batch.py
index 1bed07f785..3454b6e135 100644
--- a/openpype/hosts/traypublisher/plugins/create/create_movie_batch.py
+++ b/openpype/hosts/traypublisher/plugins/create/create_movie_batch.py
@@ -36,7 +36,7 @@ class BatchMovieCreator(TrayPublishCreator):
     # Position batch creator after simple creators
     order = 110
 
-    def apply_settings(self, project_settings, system_settings):
+    def apply_settings(self, project_settings):
         creator_settings = (
             project_settings["traypublisher"]["create"]["BatchMovieCreator"]
         )
diff --git a/openpype/hosts/tvpaint/plugins/create/create_render.py b/openpype/hosts/tvpaint/plugins/create/create_render.py
index 2369c7329f..b7a7c208d9 100644
--- a/openpype/hosts/tvpaint/plugins/create/create_render.py
+++ b/openpype/hosts/tvpaint/plugins/create/create_render.py
@@ -139,7 +139,7 @@ class CreateRenderlayer(TVPaintCreator):
     # - Mark by default instance for review
     mark_for_review = True
 
-    def apply_settings(self, project_settings, system_settings):
+    def apply_settings(self, project_settings):
         plugin_settings = (
             project_settings["tvpaint"]["create"]["create_render_layer"]
         )
@@ -387,7 +387,7 @@ class CreateRenderPass(TVPaintCreator):
     # Settings
     mark_for_review = True
 
-    def apply_settings(self, project_settings, system_settings):
+    def apply_settings(self, project_settings):
         plugin_settings = (
             project_settings["tvpaint"]["create"]["create_render_pass"]
         )
@@ -690,7 +690,7 @@ class TVPaintAutoDetectRenderCreator(TVPaintCreator):
     group_idx_offset = 10
     group_idx_padding = 3
 
-    def apply_settings(self, project_settings, system_settings):
+    def apply_settings(self, project_settings):
         plugin_settings = (
             project_settings
             ["tvpaint"]
@@ -1029,7 +1029,7 @@ class TVPaintSceneRenderCreator(TVPaintAutoCreator):
     mark_for_review = True
     active_on_create = False
 
-    def apply_settings(self, project_settings, system_settings):
+    def apply_settings(self, project_settings):
         plugin_settings = (
             project_settings["tvpaint"]["create"]["create_render_scene"]
         )
diff --git a/openpype/hosts/tvpaint/plugins/create/create_review.py b/openpype/hosts/tvpaint/plugins/create/create_review.py
index 886dae7c39..7bb7510a8e 100644
--- a/openpype/hosts/tvpaint/plugins/create/create_review.py
+++ b/openpype/hosts/tvpaint/plugins/create/create_review.py
@@ -12,7 +12,7 @@ class TVPaintReviewCreator(TVPaintAutoCreator):
     # Settings
     active_on_create = True
 
-    def apply_settings(self, project_settings, system_settings):
+    def apply_settings(self, project_settings):
         plugin_settings = (
             project_settings["tvpaint"]["create"]["create_review"]
         )
diff --git a/openpype/hosts/tvpaint/plugins/create/create_workfile.py b/openpype/hosts/tvpaint/plugins/create/create_workfile.py
index 41347576d5..c3982c0eca 100644
--- a/openpype/hosts/tvpaint/plugins/create/create_workfile.py
+++ b/openpype/hosts/tvpaint/plugins/create/create_workfile.py
@@ -9,7 +9,7 @@ class TVPaintWorkfileCreator(TVPaintAutoCreator):
     label = "Workfile"
     icon = "fa.file-o"
 
-    def apply_settings(self, project_settings, system_settings):
+    def apply_settings(self, project_settings):
         plugin_settings = (
             project_settings["tvpaint"]["create"]["create_workfile"]
         )
diff --git a/openpype/lib/attribute_definitions.py b/openpype/lib/attribute_definitions.py
index 6054d2a92a..a71d6cc72a 100644
--- a/openpype/lib/attribute_definitions.py
+++ b/openpype/lib/attribute_definitions.py
@@ -424,17 +424,25 @@ class TextDef(AbstractAttrDef):
 
 
 class EnumDef(AbstractAttrDef):
-    """Enumeration of single item from items.
+    """Enumeration of items.
+
+    Enumeration of single item from items. Or list of items if multiselection
+    is enabled.
 
     Args:
-        items: Items definition that can be converted using
-            'prepare_enum_items'.
-        default: Default value. Must be one key(value) from passed items.
+        items (Union[list[str], list[dict[str, Any]]): Items definition that
+            can be converted using 'prepare_enum_items'.
+        default (Optional[Any]): Default value. Must be one key(value) from
+            passed items or list of values for multiselection.
+        multiselection (Optional[bool]): If True, multiselection is allowed.
+            Output is list of selected items.
     """
 
     type = "enum"
 
-    def __init__(self, key, items, default=None, **kwargs):
+    def __init__(
+        self, key, items, default=None, multiselection=False, **kwargs
+    ):
         if not items:
             raise ValueError((
                 "Empty 'items' value. {} must have"
@@ -443,30 +451,44 @@ class EnumDef(AbstractAttrDef):
 
         items = self.prepare_enum_items(items)
         item_values = [item["value"] for item in items]
-        if default not in item_values:
-            for value in item_values:
-                default = value
-                break
+        item_values_set = set(item_values)
+        if multiselection:
+            if default is None:
+                default = []
+            default = list(item_values_set.intersection(default))
+
+        elif default not in item_values:
+            default = next(iter(item_values), None)
 
         super(EnumDef, self).__init__(key, default=default, **kwargs)
 
         self.items = items
-        self._item_values = set(item_values)
+        self._item_values = item_values_set
+        self.multiselection = multiselection
 
     def __eq__(self, other):
         if not super(EnumDef, self).__eq__(other):
             return False
 
-        return self.items == other.items
+        return (
+            self.items == other.items
+            and self.multiselection == other.multiselection
+        )
 
     def convert_value(self, value):
-        if value in self._item_values:
-            return value
-        return self.default
+        if not self.multiselection:
+            if value in self._item_values:
+                return value
+            return self.default
+
+        if value is None:
+            return copy.deepcopy(self.default)
+        return list(self._item_values.intersection(value))
 
     def serialize(self):
         data = super(EnumDef, self).serialize()
         data["items"] = copy.deepcopy(self.items)
+        data["multiselection"] = self.multiselection
         return data
 
     @staticmethod
diff --git a/openpype/lib/python_module_tools.py b/openpype/lib/python_module_tools.py
index a10263f991..bedf19562d 100644
--- a/openpype/lib/python_module_tools.py
+++ b/openpype/lib/python_module_tools.py
@@ -270,8 +270,8 @@ def is_func_signature_supported(func, *args, **kwargs):
 
     Args:
         func (function): A function where the signature should be tested.
-        *args (tuple[Any]): Positional arguments for function signature.
-        **kwargs (dict[str, Any]): Keyword arguments for function signature.
+        *args (Any): Positional arguments for function signature.
+        **kwargs (Any): Keyword arguments for function signature.
 
     Returns:
         bool: Function can pass in arguments.
diff --git a/openpype/modules/deadline/plugins/publish/submit_maya_deadline.py b/openpype/modules/deadline/plugins/publish/submit_maya_deadline.py
index 34f3905a17..24052f23d5 100644
--- a/openpype/modules/deadline/plugins/publish/submit_maya_deadline.py
+++ b/openpype/modules/deadline/plugins/publish/submit_maya_deadline.py
@@ -334,12 +334,6 @@ class MayaSubmitDeadline(abstract_submit_deadline.AbstractSubmitDeadline,
 
             payload = self._get_vray_render_payload(payload_data)
 
-        elif "assscene" in instance.data["families"]:
-            self.log.debug("Submitting Arnold .ass standalone render..")
-            ass_export_payload = self._get_arnold_export_payload(payload_data)
-            export_job = self.submit(ass_export_payload)
-
-            payload = self._get_arnold_render_payload(payload_data)
         else:
             self.log.debug("Submitting MayaBatch render..")
             payload = self._get_maya_payload(payload_data)
@@ -635,53 +629,6 @@ class MayaSubmitDeadline(abstract_submit_deadline.AbstractSubmitDeadline,
 
         return job_info, attr.asdict(plugin_info)
 
-    def _get_arnold_export_payload(self, data):
-
-        try:
-            from openpype.scripts import export_maya_ass_job
-        except Exception:
-            raise AssertionError(
-                "Expected module 'export_maya_ass_job' to be available")
-
-        module_path = export_maya_ass_job.__file__
-        if module_path.endswith(".pyc"):
-            module_path = module_path[: -len(".pyc")] + ".py"
-
-        script = os.path.normpath(module_path)
-
-        job_info = copy.deepcopy(self.job_info)
-        job_info.Name = self._job_info_label("Export")
-
-        # Force a single frame Python job
-        job_info.Plugin = "Python"
-        job_info.Frames = 1
-
-        renderlayer = self._instance.data["setMembers"]
-
-        # add required env vars for the export script
-        envs = {
-            "AVALON_APP_NAME": os.environ.get("AVALON_APP_NAME"),
-            "OPENPYPE_ASS_EXPORT_RENDER_LAYER": renderlayer,
-            "OPENPYPE_ASS_EXPORT_SCENE_FILE": self.scene_path,
-            "OPENPYPE_ASS_EXPORT_OUTPUT": job_info.OutputFilename[0],
-            "OPENPYPE_ASS_EXPORT_START": int(self._instance.data["frameStartHandle"]),  # noqa
-            "OPENPYPE_ASS_EXPORT_END":  int(self._instance.data["frameEndHandle"]),  # noqa
-            "OPENPYPE_ASS_EXPORT_STEP": 1
-        }
-        for key, value in envs.items():
-            if not value:
-                continue
-            job_info.EnvironmentKeyValue[key] = value
-
-        plugin_info = PythonPluginInfo(
-            ScriptFile=script,
-            Version="3.6",
-            Arguments="",
-            SingleFrameOnly="True"
-        )
-
-        return job_info, attr.asdict(plugin_info)
-
     def _get_vray_render_payload(self, data):
 
         # Job Info
diff --git a/openpype/pipeline/create/context.py b/openpype/pipeline/create/context.py
index 3076efcde7..f9e3f86652 100644
--- a/openpype/pipeline/create/context.py
+++ b/openpype/pipeline/create/context.py
@@ -1774,7 +1774,7 @@ class CreateContext:
         self.creator_discover_result = report
         for creator_class in report.plugins:
             if inspect.isabstract(creator_class):
-                self.log.info(
+                self.log.debug(
                     "Skipping abstract Creator {}".format(str(creator_class))
                 )
                 continue
@@ -1804,6 +1804,7 @@ class CreateContext:
                 self,
                 self.headless
             )
+
             if not creator.enabled:
                 disabled_creators[creator_identifier] = creator
                 continue
diff --git a/openpype/pipeline/create/creator_plugins.py b/openpype/pipeline/create/creator_plugins.py
index 38d6b6f465..de9cc7cff3 100644
--- a/openpype/pipeline/create/creator_plugins.py
+++ b/openpype/pipeline/create/creator_plugins.py
@@ -1,16 +1,12 @@
 import copy
 import collections
 
-from abc import (
-    ABCMeta,
-    abstractmethod,
-    abstractproperty
-)
+from abc import ABCMeta, abstractmethod
 
 import six
 
 from openpype.settings import get_system_settings, get_project_settings
-from openpype.lib import Logger
+from openpype.lib import Logger, is_func_signature_supported
 from openpype.pipeline.plugin_discover import (
     discover,
     register_plugin,
@@ -84,7 +80,8 @@ class SubsetConvertorPlugin(object):
     def host(self):
         return self._create_context.host
 
-    @abstractproperty
+    @property
+    @abstractmethod
     def identifier(self):
         """Converted identifier.
 
@@ -161,7 +158,6 @@ class BaseCreator:
 
     Args:
         project_settings (Dict[str, Any]): Project settings.
-        system_settings (Dict[str, Any]): System settings.
         create_context (CreateContext): Context which initialized creator.
         headless (bool): Running in headless mode.
     """
@@ -208,10 +204,33 @@ class BaseCreator:
         # - we may use UI inside processing this attribute should be checked
         self.headless = headless
 
-        self.apply_settings(project_settings, system_settings)
+        expect_system_settings = False
+        if is_func_signature_supported(
+            self.apply_settings, project_settings
+        ):
+            self.apply_settings(project_settings)
+        else:
+            expect_system_settings = True
+            # Backwards compatibility for system settings
+            self.apply_settings(project_settings, system_settings)
 
-    def apply_settings(self, project_settings, system_settings):
-        """Method called on initialization of plugin to apply settings."""
+        init_overriden = self.__class__.__init__ is not BaseCreator.__init__
+        if init_overriden or expect_system_settings:
+            self.log.warning((
+                "WARNING: Source - Create plugin {}."
+                " System settings argument will not be passed to"
+                " '__init__' and 'apply_settings' methods in future versions"
+                " of OpenPype. Planned version to drop the support"
+                " is 3.16.6 or 3.17.0. Please contact Ynput core team if you"
+                " need to keep system settings."
+            ).format(self.__class__.__name__))
+
+    def apply_settings(self, project_settings):
+        """Method called on initialization of plugin to apply settings.
+
+        Args:
+            project_settings (dict[str, Any]): Project settings.
+        """
 
         pass
 
@@ -224,7 +243,8 @@ class BaseCreator:
 
         return self.family
 
-    @abstractproperty
+    @property
+    @abstractmethod
     def family(self):
         """Family that plugin represents."""
 
diff --git a/openpype/scripts/export_maya_ass_job.py b/openpype/scripts/export_maya_ass_job.py
deleted file mode 100644
index 16e841ce96..0000000000
--- a/openpype/scripts/export_maya_ass_job.py
+++ /dev/null
@@ -1,105 +0,0 @@
-"""This module is used for command line exporting of ASS files.
-
-WARNING:
-This need to be rewriten to be able use it in Pype 3!
-"""
-
-import os
-import argparse
-import logging
-import subprocess
-import platform
-
-try:
-    from shutil import which
-except ImportError:
-    # we are in python < 3.3
-    def which(command):
-        path = os.getenv('PATH')
-        for p in path.split(os.path.pathsep):
-            p = os.path.join(p, command)
-            if os.path.exists(p) and os.access(p, os.X_OK):
-                return p
-
-handler = logging.basicConfig()
-log = logging.getLogger("Publish Image Sequences")
-log.setLevel(logging.DEBUG)
-
-error_format = "Failed {plugin.__name__}: {error} -- {error.traceback}"
-
-
-def __main__():
-    parser = argparse.ArgumentParser()
-    parser.add_argument("--paths",
-                        nargs="*",
-                        default=[],
-                        help="The filepaths to publish. This can be a "
-                             "directory or a path to a .json publish "
-                             "configuration.")
-    parser.add_argument("--gui",
-                        default=False,
-                        action="store_true",
-                        help="Whether to run Pyblish in GUI mode.")
-
-    parser.add_argument("--pype", help="Pype root")
-
-    kwargs, args = parser.parse_known_args()
-
-    print("Running pype ...")
-    auto_pype_root = os.path.dirname(os.path.abspath(__file__))
-    auto_pype_root = os.path.abspath(auto_pype_root + "../../../../..")
-
-    auto_pype_root = os.environ.get('OPENPYPE_SETUP_PATH') or auto_pype_root
-    if os.environ.get('OPENPYPE_SETUP_PATH'):
-        print("Got Pype location from environment: {}".format(
-            os.environ.get('OPENPYPE_SETUP_PATH')))
-
-    pype_command = "openpype.ps1"
-    if platform.system().lower() == "linux":
-        pype_command = "pype"
-    elif platform.system().lower() == "windows":
-        pype_command = "openpype.bat"
-
-    if kwargs.pype:
-        pype_root = kwargs.pype
-    else:
-        # test if pype.bat / pype is in the PATH
-        # if it is, which() will return its path and we use that.
-        # if not, we use auto_pype_root path. Caveat of that one is
-        # that it can be UNC path and that will not work on windows.
-
-        pype_path = which(pype_command)
-
-        if pype_path:
-            pype_root = os.path.dirname(pype_path)
-        else:
-            pype_root = auto_pype_root
-
-    print("Set pype root to: {}".format(pype_root))
-    print("Paths: {}".format(kwargs.paths or [os.getcwd()]))
-
-    # paths = kwargs.paths or [os.environ.get("OPENPYPE_METADATA_FILE")] or [os.getcwd()]  # noqa
-
-    mayabatch = os.environ.get("AVALON_APP_NAME").replace("maya", "mayabatch")
-    args = [
-        os.path.join(pype_root, pype_command),
-        "launch",
-        "--app",
-        mayabatch,
-        "-script",
-        os.path.join(pype_root, "repos", "pype",
-                     "pype", "scripts", "export_maya_ass_sequence.mel")
-    ]
-
-    print("Pype command: {}".format(" ".join(args)))
-    # Forcing forwaring the environment because environment inheritance does
-    # not always work.
-    # Cast all values in environment to str to be safe
-    env = {k: str(v) for k, v in os.environ.items()}
-    exit_code = subprocess.call(args, env=env)
-    if exit_code != 0:
-        raise RuntimeError("Publishing failed.")
-
-
-if __name__ == '__main__':
-    __main__()
diff --git a/openpype/scripts/export_maya_ass_sequence.mel b/openpype/scripts/export_maya_ass_sequence.mel
deleted file mode 100644
index b3b9a8543e..0000000000
--- a/openpype/scripts/export_maya_ass_sequence.mel
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- Script to export specified layer as ass files.
-
-Attributes:
-
-    scene_file (str): Name of the scene to load.
-    start (int): Start frame.
-    end (int): End frame.
-    step (int): Step size.
-    output_path (str): File output path.
-    render_layer (str): Name of render layer.
-
-*/
-
-$scene_file=`getenv "OPENPYPE_ASS_EXPORT_SCENE_FILE"`;
-$step=`getenv "OPENPYPE_ASS_EXPORT_STEP"`;
-$start=`getenv "OPENPYPE_ASS_EXPORT_START"`;
-$end=`getenv "OPENPYPE_ASS_EXPORT_END"`;
-$file_path=`getenv "OPENPYPE_ASS_EXPORT_OUTPUT"`;
-$render_layer = `getenv "OPENPYPE_ASS_EXPORT_RENDER_LAYER"`;
-
-print("*** ASS Export Plugin\n");
-
-if ($scene_file == "") {
-  print("!!! cannot determine scene file\n");
-  quit -a -ex -1;
-}
-
-if ($step == "") {
-  print("!!! cannot determine step size\n");
-  quit -a -ex -1;
-}
-
-if ($start == "") {
-  print("!!! cannot determine start frame\n");
-  quit -a -ex -1;
-}
-
-if ($end == "") {
-  print("!!! cannot determine end frame\n");
-  quit -a -ex -1;
-}
-
-if ($file_path == "") {
-  print("!!! cannot determine output file\n");
-  quit -a -ex -1;
-}
-
-if ($render_layer == "") {
-  print("!!! cannot determine render layer\n");
-  quit -a -ex -1;
-}
-
-
-print(">>> Opening Scene [ " + $scene_file + " ]\n");
-
-// open scene
-file -o -f $scene_file;
-
-// switch to render layer
-print(">>> Switching layer [ "+ $render_layer + " ]\n");
-editRenderLayerGlobals -currentRenderLayer $render_layer;
-
-// export
-print(">>> Exporting to [ " + $file_path + " ]\n");
-arnoldExportAss -mask 255 -sl 1 -ll 1 -bb 1 -sf $start -se $end -b -fs $step;
-print("--- Done\n");
diff --git a/openpype/scripts/fusion_switch_shot.py b/openpype/scripts/fusion_switch_shot.py
deleted file mode 100644
index 1cc728226f..0000000000
--- a/openpype/scripts/fusion_switch_shot.py
+++ /dev/null
@@ -1,241 +0,0 @@
-import os
-import re
-import sys
-import logging
-
-from openpype.client import get_asset_by_name, get_versions
-
-# Pipeline imports
-from openpype.hosts.fusion import api
-import openpype.hosts.fusion.api.lib as fusion_lib
-
-# Config imports
-from openpype.lib import version_up
-from openpype.pipeline import (
-    install_host,
-    registered_host,
-    legacy_io,
-    get_current_project_name,
-)
-
-from openpype.pipeline.context_tools import get_workdir_from_session
-from openpype.pipeline.version_start import get_versioning_start
-
-log = logging.getLogger("Update Slap Comp")
-
-
-def _format_version_folder(folder):
-    """Format a version folder based on the filepath
-
-    Args:
-        folder: file path to a folder
-
-    Returns:
-        str: new version folder name
-    """
-
-    new_version = get_versioning_start(
-        get_current_project_name(),
-        "fusion",
-        family="workfile"
-    )
-    if os.path.isdir(folder):
-        re_version = re.compile(r"v\d+$")
-        versions = [i for i in os.listdir(folder) if os.path.isdir(i)
-                    and re_version.match(i)]
-        if versions:
-            # ensure the "v" is not included
-            new_version = int(max(versions)[1:]) + 1
-
-    version_folder = "v{:03d}".format(new_version)
-
-    return version_folder
-
-
-def _get_fusion_instance():
-    fusion = getattr(sys.modules["__main__"], "fusion", None)
-    if fusion is None:
-        try:
-            # Support for FuScript.exe, BlackmagicFusion module for py2 only
-            import BlackmagicFusion as bmf
-            fusion = bmf.scriptapp("Fusion")
-        except ImportError:
-            raise RuntimeError("Could not find a Fusion instance")
-    return fusion
-
-
-def _format_filepath(session):
-
-    project = session["AVALON_PROJECT"]
-    asset = session["AVALON_ASSET"]
-
-    # Save updated slap comp
-    work_path = get_workdir_from_session(session)
-    walk_to_dir = os.path.join(work_path, "scenes", "slapcomp")
-    slapcomp_dir = os.path.abspath(walk_to_dir)
-
-    # Ensure destination exists
-    if not os.path.isdir(slapcomp_dir):
-        log.warning("Folder did not exist, creating folder structure")
-        os.makedirs(slapcomp_dir)
-
-    # Compute output path
-    new_filename = "{}_{}_slapcomp_v001.comp".format(project, asset)
-    new_filepath = os.path.join(slapcomp_dir, new_filename)
-
-    # Create new unqiue filepath
-    if os.path.exists(new_filepath):
-        new_filepath = version_up(new_filepath)
-
-    return new_filepath
-
-
-def _update_savers(comp, session):
-    """Update all savers of the current comp to ensure the output is correct
-
-    Args:
-        comp (object): current comp instance
-        session (dict): the current Avalon session
-
-    Returns:
-         None
-    """
-
-    new_work = get_workdir_from_session(session)
-    renders = os.path.join(new_work, "renders")
-    version_folder = _format_version_folder(renders)
-    renders_version = os.path.join(renders, version_folder)
-
-    comp.Print("New renders to: %s\n" % renders)
-
-    with api.comp_lock_and_undo_chunk(comp):
-        savers = comp.GetToolList(False, "Saver").values()
-        for saver in savers:
-            filepath = saver.GetAttrs("TOOLST_Clip_Name")[1.0]
-            filename = os.path.basename(filepath)
-            new_path = os.path.join(renders_version, filename)
-            saver["Clip"] = new_path
-
-
-def update_frame_range(comp, representations):
-    """Update the frame range of the comp and render length
-
-    The start and end frame are based on the lowest start frame and the highest
-    end frame
-
-    Args:
-        comp (object): current focused comp
-        representations (list) collection of dicts
-
-    Returns:
-        None
-
-    """
-
-    version_ids = [r["parent"] for r in representations]
-    project_name = get_current_project_name()
-    versions = list(get_versions(project_name, version_ids=version_ids))
-
-    start = min(v["data"]["frameStart"] for v in versions)
-    end = max(v["data"]["frameEnd"] for v in versions)
-
-    fusion_lib.update_frame_range(start, end, comp=comp)
-
-
-def switch(asset_name, filepath=None, new=True):
-    """Switch the current containers of the file to the other asset (shot)
-
-    Args:
-        filepath (str): file path of the comp file
-        asset_name (str): name of the asset (shot)
-        new (bool): Save updated comp under a different name
-
-    Returns:
-        comp path (str): new filepath of the updated comp
-
-    """
-
-    # If filepath provided, ensure it is valid absolute path
-    if filepath is not None:
-        if not os.path.isabs(filepath):
-            filepath = os.path.abspath(filepath)
-
-        assert os.path.exists(filepath), "%s must exist " % filepath
-
-    # Assert asset name exists
-    # It is better to do this here then to wait till switch_shot does it
-    project_name = get_current_project_name()
-    asset = get_asset_by_name(project_name, asset_name)
-    assert asset, "Could not find '%s' in the database" % asset_name
-
-    # Go to comp
-    if not filepath:
-        current_comp = api.get_current_comp()
-        assert current_comp is not None, "Could not find current comp"
-    else:
-        fusion = _get_fusion_instance()
-        current_comp = fusion.LoadComp(filepath, quiet=True)
-        assert current_comp is not None, "Fusion could not load '%s'" % filepath
-
-    host = registered_host()
-    containers = list(host.ls())
-    assert containers, "Nothing to update"
-
-    representations = []
-    for container in containers:
-        try:
-            representation = fusion_lib.switch_item(container,
-                                                    asset_name=asset_name)
-            representations.append(representation)
-        except Exception as e:
-            current_comp.Print("Error in switching! %s\n" % e.message)
-
-    message = "Switched %i Loaders of the %i\n" % (len(representations),
-                                                   len(containers))
-    current_comp.Print(message)
-
-    # Build the session to switch to
-    switch_to_session = legacy_io.Session.copy()
-    switch_to_session["AVALON_ASSET"] = asset['name']
-
-    if new:
-        comp_path = _format_filepath(switch_to_session)
-
-        # Update savers output based on new session
-        _update_savers(current_comp, switch_to_session)
-    else:
-        comp_path = version_up(filepath)
-
-    current_comp.Print(comp_path)
-
-    current_comp.Print("\nUpdating frame range")
-    update_frame_range(current_comp, representations)
-
-    current_comp.Save(comp_path)
-
-    return comp_path
-
-
-if __name__ == '__main__':
-
-    import argparse
-
-    parser = argparse.ArgumentParser(description="Switch to a shot within an"
-                                                 "existing comp file")
-
-    parser.add_argument("--file_path",
-                        type=str,
-                        default=True,
-                        help="File path of the comp to use")
-
-    parser.add_argument("--asset_name",
-                        type=str,
-                        default=True,
-                        help="Name of the asset (shot) to switch")
-
-    args, unknown = parser.parse_args()
-
-    install_host(api)
-    switch(args.asset_name, args.file_path)
-
-    sys.exit(0)
diff --git a/openpype/tools/attribute_defs/widgets.py b/openpype/tools/attribute_defs/widgets.py
index 7967416e9f..d9c55f4a64 100644
--- a/openpype/tools/attribute_defs/widgets.py
+++ b/openpype/tools/attribute_defs/widgets.py
@@ -19,6 +19,7 @@ from openpype.tools.utils import (
     CustomTextComboBox,
     FocusSpinBox,
     FocusDoubleSpinBox,
+    MultiSelectionComboBox,
 )
 from openpype.widgets.nice_checkbox import NiceCheckbox
 
@@ -412,10 +413,19 @@ class EnumAttrWidget(_BaseAttrDefWidget):
         self._multivalue = False
         super(EnumAttrWidget, self).__init__(*args, **kwargs)
 
+    @property
+    def multiselection(self):
+        return self.attr_def.multiselection
+
     def _ui_init(self):
-        input_widget = CustomTextComboBox(self)
-        combo_delegate = QtWidgets.QStyledItemDelegate(input_widget)
-        input_widget.setItemDelegate(combo_delegate)
+        if self.multiselection:
+            input_widget = MultiSelectionComboBox(self)
+
+        else:
+            input_widget = CustomTextComboBox(self)
+            combo_delegate = QtWidgets.QStyledItemDelegate(input_widget)
+            input_widget.setItemDelegate(combo_delegate)
+            self._combo_delegate = combo_delegate
 
         if self.attr_def.tooltip:
             input_widget.setToolTip(self.attr_def.tooltip)
@@ -427,9 +437,11 @@ class EnumAttrWidget(_BaseAttrDefWidget):
         if idx >= 0:
             input_widget.setCurrentIndex(idx)
 
-        input_widget.currentIndexChanged.connect(self._on_value_change)
+        if self.multiselection:
+            input_widget.value_changed.connect(self._on_value_change)
+        else:
+            input_widget.currentIndexChanged.connect(self._on_value_change)
 
-        self._combo_delegate = combo_delegate
         self._input_widget = input_widget
 
         self.main_layout.addWidget(input_widget, 0)
@@ -442,17 +454,40 @@ class EnumAttrWidget(_BaseAttrDefWidget):
         self.value_changed.emit(new_value, self.attr_def.id)
 
     def current_value(self):
+        if self.multiselection:
+            return self._input_widget.value()
         idx = self._input_widget.currentIndex()
         return self._input_widget.itemData(idx)
 
+    def _multiselection_multivalue_prep(self, values):
+        final = None
+        multivalue = False
+        for value in values:
+            value = set(value)
+            if final is None:
+                final = value
+            elif multivalue or final != value:
+                final |= value
+                multivalue = True
+        return list(final), multivalue
+
     def set_value(self, value, multivalue=False):
         if multivalue:
-            set_value = set(value)
-            if len(set_value) == 1:
-                multivalue = False
-                value = tuple(set_value)[0]
+            if self.multiselection:
+                value, multivalue = self._multiselection_multivalue_prep(
+                    value)
+            else:
+                set_value = set(value)
+                if len(set_value) == 1:
+                    multivalue = False
+                    value = tuple(set_value)[0]
 
-        if not multivalue:
+        if self.multiselection:
+            self._input_widget.blockSignals(True)
+            self._input_widget.set_value(value)
+            self._input_widget.blockSignals(False)
+
+        elif not multivalue:
             idx = self._input_widget.findData(value)
             cur_idx = self._input_widget.currentIndex()
             if idx != cur_idx and idx >= 0:
diff --git a/openpype/tools/settings/settings/item_widgets.py b/openpype/tools/settings/settings/item_widgets.py
index 117eca7d6b..2fd13cbbd8 100644
--- a/openpype/tools/settings/settings/item_widgets.py
+++ b/openpype/tools/settings/settings/item_widgets.py
@@ -4,6 +4,7 @@ from qtpy import QtWidgets, QtCore, QtGui
 
 from openpype.widgets.sliders import NiceSlider
 from openpype.tools.settings import CHILD_OFFSET
+from openpype.tools.utils import MultiSelectionComboBox
 from openpype.settings.entities.exceptions import BaseInvalidValue
 
 from .widgets import (
@@ -15,7 +16,6 @@ from .widgets import (
     SettingsNiceCheckbox,
     SettingsLineEdit
 )
-from .multiselection_combobox import MultiSelectionComboBox
 from .wrapper_widgets import (
     WrapperWidget,
     CollapsibleWrapper,
diff --git a/openpype/tools/utils/__init__.py b/openpype/tools/utils/__init__.py
index f35bfaee70..d343353112 100644
--- a/openpype/tools/utils/__init__.py
+++ b/openpype/tools/utils/__init__.py
@@ -38,6 +38,7 @@ from .models import (
 from .overlay_messages import (
     MessageOverlayObject,
 )
+from .multiselection_combobox import MultiSelectionComboBox
 
 
 __all__ = (
@@ -78,4 +79,6 @@ __all__ = (
     "RecursiveSortFilterProxyModel",
 
     "MessageOverlayObject",
+
+    "MultiSelectionComboBox",
 )
diff --git a/openpype/tools/utils/lib.py b/openpype/tools/utils/lib.py
index 2df46c1eae..723e71e7aa 100644
--- a/openpype/tools/utils/lib.py
+++ b/openpype/tools/utils/lib.py
@@ -170,8 +170,12 @@ def get_openpype_qt_app():
             if attr is not None:
                 QtWidgets.QApplication.setAttribute(attr)
 
-        if hasattr(
-            QtWidgets.QApplication, "setHighDpiScaleFactorRoundingPolicy"
+        policy = os.getenv("QT_SCALE_FACTOR_ROUNDING_POLICY")
+        if (
+            hasattr(
+                QtWidgets.QApplication, "setHighDpiScaleFactorRoundingPolicy"
+            )
+            and not policy
         ):
             QtWidgets.QApplication.setHighDpiScaleFactorRoundingPolicy(
                 QtCore.Qt.HighDpiScaleFactorRoundingPolicy.PassThrough
diff --git a/openpype/tools/settings/settings/multiselection_combobox.py b/openpype/tools/utils/multiselection_combobox.py
similarity index 84%
rename from openpype/tools/settings/settings/multiselection_combobox.py
rename to openpype/tools/utils/multiselection_combobox.py
index d64fc83745..34361fca17 100644
--- a/openpype/tools/settings/settings/multiselection_combobox.py
+++ b/openpype/tools/utils/multiselection_combobox.py
@@ -1,9 +1,10 @@
 from qtpy import QtCore, QtGui, QtWidgets
-from openpype.tools.utils.lib import (
+
+from .lib import (
     checkstate_int_to_enum,
     checkstate_enum_to_int,
 )
-from openpype.tools.utils.constants import (
+from .constants import (
     CHECKED_INT,
     UNCHECKED_INT,
     ITEM_IS_USER_TRISTATE,
@@ -60,12 +61,25 @@ class MultiSelectionComboBox(QtWidgets.QComboBox):
         self._block_mouse_release_timer = QtCore.QTimer(self, singleShot=True)
         self._initial_mouse_pos = None
         self._separator = separator
-        self.placeholder_text = placeholder
-        self.delegate = ComboItemDelegate(self)
-        self.setItemDelegate(self.delegate)
+        self._placeholder_text = placeholder
+        delegate = ComboItemDelegate(self)
+        self.setItemDelegate(delegate)
 
-        self.lines = {}
-        self.item_height = None
+        self._lines = {}
+        self._item_height = None
+        self._custom_text = None
+        self._delegate = delegate
+
+    def get_placeholder_text(self):
+        return self._placeholder_text
+
+    def set_placeholder_text(self, text):
+        self._placeholder_text = text
+        self._update_size_hint()
+
+    def set_custom_text(self, text):
+        self._custom_text = text
+        self._update_size_hint()
 
     def focusInEvent(self, event):
         self.focused_in.emit()
@@ -158,7 +172,7 @@ class MultiSelectionComboBox(QtWidgets.QComboBox):
         if new_state is not None:
             model.setData(current_index, new_state, QtCore.Qt.CheckStateRole)
             self.view().update(current_index)
-            self.update_size_hint()
+            self._update_size_hint()
             self.value_changed.emit()
             return True
 
@@ -182,25 +196,33 @@ class MultiSelectionComboBox(QtWidgets.QComboBox):
         self.initStyleOption(option)
         painter.drawComplexControl(QtWidgets.QStyle.CC_ComboBox, option)
 
-        # draw the icon and text
         items = self.checked_items_text()
-        if not items:
-            option.currentText = self.placeholder_text
+        # draw the icon and text
+        draw_text = True
+        combotext = None
+        if self._custom_text is not None:
+            combotext = self._custom_text
+        elif not items:
+            combotext = self._placeholder_text
+        else:
+            draw_text = False
+        if draw_text:
+            option.currentText = combotext
             option.palette.setCurrentColorGroup(QtGui.QPalette.Disabled)
             painter.drawControl(QtWidgets.QStyle.CE_ComboBoxLabel, option)
             return
 
         font_metricts = self.fontMetrics()
 
-        if self.item_height is None:
+        if self._item_height is None:
             self.updateGeometry()
             self.update()
             return
 
-        for line, items in self.lines.items():
+        for line, items in self._lines.items():
             top_y = (
                 option.rect.top()
-                + (line * self.item_height)
+                + (line * self._item_height)
                 + self.top_bottom_margins
             )
             left_x = option.rect.left() + self.left_offset
@@ -210,7 +232,7 @@ class MultiSelectionComboBox(QtWidgets.QComboBox):
 
                 label_rect.moveTop(top_y)
                 label_rect.moveLeft(left_x)
-                label_rect.setHeight(self.item_height)
+                label_rect.setHeight(self._item_height)
                 label_rect.setWidth(
                     label_rect.width() + self.left_right_padding
                 )
@@ -239,14 +261,18 @@ class MultiSelectionComboBox(QtWidgets.QComboBox):
 
     def resizeEvent(self, *args, **kwargs):
         super(MultiSelectionComboBox, self).resizeEvent(*args, **kwargs)
-        self.update_size_hint()
+        self._update_size_hint()
 
-    def update_size_hint(self):
-        self.lines = {}
+    def _update_size_hint(self):
+        if self._custom_text is not None:
+            self.update()
+            return
+        self._lines = {}
 
         items = self.checked_items_text()
         if not items:
             self.update()
+            self.repaint()
             return
 
         option = QtWidgets.QStyleOptionComboBox()
@@ -259,7 +285,7 @@ class MultiSelectionComboBox(QtWidgets.QComboBox):
         total_width = option.rect.width() - btn_rect.width()
 
         line = 0
-        self.lines = {line: []}
+        self._lines = {line: []}
 
         font_metricts = self.fontMetrics()
         default_left_x = 0 + self.left_offset
@@ -270,18 +296,18 @@ class MultiSelectionComboBox(QtWidgets.QComboBox):
             right_x = left_x + width
             if right_x > total_width:
                 left_x = int(default_left_x)
-                if self.lines.get(line):
+                if self._lines.get(line):
                     line += 1
-                    self.lines[line] = [item]
+                    self._lines[line] = [item]
                     left_x += width
                 else:
-                    self.lines[line] = [item]
+                    self._lines[line] = [item]
                     line += 1
             else:
-                if line in self.lines:
-                    self.lines[line].append(item)
+                if line in self._lines:
+                    self._lines[line].append(item)
                 else:
-                    self.lines[line] = [item]
+                    self._lines[line] = [item]
                 left_x = left_x + width + self.item_spacing
 
         self.update()
@@ -289,18 +315,20 @@ class MultiSelectionComboBox(QtWidgets.QComboBox):
 
     def sizeHint(self):
         value = super(MultiSelectionComboBox, self).sizeHint()
-        lines = len(self.lines)
-        if lines == 0:
-            lines = 1
+        lines = 1
+        if self._custom_text is None:
+            lines = len(self._lines)
+            if lines == 0:
+                lines = 1
 
-        if self.item_height is None:
-            self.item_height = (
+        if self._item_height is None:
+            self._item_height = (
                 self.fontMetrics().height()
                 + (2 * self.top_bottom_padding)
                 + (2 * self.top_bottom_margins)
             )
         value.setHeight(
-            (lines * self.item_height)
+            (lines * self._item_height)
             + (2 * self.top_bottom_margins)
         )
         return value
@@ -316,7 +344,7 @@ class MultiSelectionComboBox(QtWidgets.QComboBox):
             else:
                 check_state = UNCHECKED_INT
             self.setItemData(idx, check_state, QtCore.Qt.CheckStateRole)
-        self.update_size_hint()
+        self._update_size_hint()
 
     def value(self):
         items = list()