diff --git a/src/blenderbim/blenderbim/bim/module/resource/__init__.py b/src/blenderbim/blenderbim/bim/module/resource/__init__.py
index 775e156842..339e487b0b 100644
--- a/src/blenderbim/blenderbim/bim/module/resource/__init__.py
+++ b/src/blenderbim/blenderbim/bim/module/resource/__init__.py
@@ -12,6 +12,8 @@ classes = (
     operator.LoadResourceProperties,
     operator.ExpandResource,
     operator.ContractResource,
+    operator.AssignResource,
+    operator.UnAssignResource,
     prop.Resource,
     prop.BIMResourceProperties,
     prop.BIMResourceTreeProperties,
diff --git a/src/blenderbim/blenderbim/bim/module/resource/operator.py b/src/blenderbim/blenderbim/bim/module/resource/operator.py
index faeb8d54c9..10484876d5 100644
--- a/src/blenderbim/blenderbim/bim/module/resource/operator.py
+++ b/src/blenderbim/blenderbim/bim/module/resource/operator.py
@@ -197,3 +197,47 @@ class ContractResource(bpy.types.Operator):
         Data.load(self.file)
         bpy.ops.bim.load_resources()
         return {"FINISHED"}
+
+
+class AssignResource(bpy.types.Operator):
+    bl_idname = "bim.assign_resource"
+    bl_label = "Assign Resource"
+    resource: bpy.props.IntProperty()
+    related_object: bpy.props.StringProperty()
+
+    def execute(self, context):
+        related_objects = (
+            [bpy.data.objects.get(self.related_object)] if self.related_object else bpy.context.selected_objects
+        )
+        for related_object in related_objects:
+            self.file = IfcStore.get_file()
+            ifcopenshell.api.run(
+                "resource.assign_resource",
+                self.file,
+                relating_resource=self.file.by_id(self.resource),
+                related_object=self.file.by_id(related_object.BIMObjectProperties.ifc_definition_id),
+            )
+        Data.load(self.file)
+        return {"FINISHED"}
+
+
+class UnAssignResource(bpy.types.Operator):
+    bl_idname = "bim.unassign_resource"
+    bl_label = "Unassign Resource"
+    resource: bpy.props.IntProperty()
+    related_object: bpy.props.StringProperty()
+
+    def execute(self, context):
+        related_objects = (
+            [bpy.data.objects.get(self.related_object)] if self.related_object else bpy.context.selected_objects
+        )
+        for related_object in related_objects:
+            self.file = IfcStore.get_file()
+            ifcopenshell.api.run(
+                "resource.unassign_resource",
+                self.file,
+                relating_resource=self.file.by_id(self.resource),
+                related_object=self.file.by_id(related_object.BIMObjectProperties.ifc_definition_id),
+            )
+        Data.load(self.file)
+        return {"FINISHED"}
diff --git a/src/blenderbim/blenderbim/bim/module/resource/ui.py b/src/blenderbim/blenderbim/bim/module/resource/ui.py
index a6ab62138d..1259d5e39e 100644
--- a/src/blenderbim/blenderbim/bim/module/resource/ui.py
+++ b/src/blenderbim/blenderbim/bim/module/resource/ui.py
@@ -33,7 +33,7 @@ class BIM_PT_resources(Panel):
             return
 
         row = self.layout.row(align=True)
-        op = row.operator("bim.add_resource", text="Add SubContract", icon="FILE_TICK")
+        op = row.operator("bim.add_resource", text="Add SubContract", icon="TEXT")
         op.ifc_class = "IfcSubContractResource"
         op.resource = 0
         op = row.operator("bim.add_resource", text="Add Crew", icon="COMMUNITY")
@@ -88,7 +88,7 @@ class BIM_UL_resources(UIList):
     def draw_item(self, context, layout, data, item, icon, active_data, active_propname):
         resource = Data.resources[item.ifc_definition_id]
         icon_map = {
-            "IfcSubContractResource": "FILE_TICK",
+            "IfcSubContractResource": "TEXT",
             "IfcCrewResource": "COMMUNITY",
             "IfcConstructionEquipmentResource": "TOOL_SETTINGS",
             "IfcLaborResource": "OUTLINER_OB_ARMATURE",
@@ -113,6 +113,16 @@ class BIM_UL_resources(UIList):
                 row.label(text="", icon="DOT")
             row.prop(item, "name", emboss=False, text="", icon=icon_map[resource["type"]])
 
+            if context.active_object:
+                oprops = context.active_object.BIMObjectProperties
+                row = layout.row(align=True)
+                if oprops.ifc_definition_id in Data.resources[item.ifc_definition_id]["RelatedObjects"]:
+                    op = row.operator("bim.unassign_resource", text="", icon="KEYFRAME_HLT", emboss=False)
+                    op.resource = item.ifc_definition_id
+                else:
+                    op = row.operator("bim.assign_resource", text="", icon="KEYFRAME", emboss=False)
+                    op.resource = item.ifc_definition_id
+
             if props.active_resource_id == item.ifc_definition_id:
                 row.operator("bim.edit_resource", text="", icon="CHECKMARK")
                 row.operator("bim.disable_editing_resource", text="", icon="CANCEL")
diff --git a/src/ifcopenshell-python/ifcopenshell/api/resource/assign_resource.py b/src/ifcopenshell-python/ifcopenshell/api/resource/assign_resource.py
index 35c5d70243..83e6f85462 100644
--- a/src/ifcopenshell-python/ifcopenshell/api/resource/assign_resource.py
+++ b/src/ifcopenshell-python/ifcopenshell/api/resource/assign_resource.py
@@ -37,7 +37,7 @@ class Usecase:
                     "GlobalId": ifcopenshell.guid.new(),
                     "OwnerHistory": ifcopenshell.api.run("owner.create_owner_history", self.file),
                     "RelatedObjects": [self.settings["related_object"]],
-                    "RelatingProduct": self.settings["relating_resource"],
+                    "RelatingResource": self.settings["relating_resource"],
                 }
             )
         return resource_of