Individually Adressing of Submeshes

Hi!
I import objects from Blender to my UE4 project as *.fbx-files. For example I import a room model with a door - two objects in blender, imported as combined or splitted staticmeshes in UE4. So far so good.
The issue:
I have an actor Room and add the 1 or 2 meshes to it. I want to be able to adjust the properties of the room as well as the properties of the door without using them as two seperate objects in my content browser. Is this possible? What`s the best workflow for such an issue? Is there any other way to adress submeshes of one object like for material with separate elements? Because with a high number of adjustable meshes you got a huge number of objects in your content browser.
THY!