How to map windows?

Hi community

I just wanted to know, how people map windows? When importing a model from Revit using generic windows, the materials included in a window often looks like this:

When I look at windows from the material library, it looks like a window includes both insulated glazing units (IGUs), frames, etc., and that the declared unit is m2.

I would be tempted to drop the window (VELFAC 200 Energy in this case) on my building component type, like illustrated below, but that would be wrong, right?
What is the proper way to do this?

My own conclusion so for is that you can only use full window assemblies, like this example from VELFAC, for simple models/sketches, where windows is one single surface without frames, etc., but please correct my, if there’s something I’m not seeing.

NB!
As vindues include multiple materials, shouldn’t they be placed under Construction instead of Material? :thinking: