Some questions about how to set up a Radiance Model, for a "not simple room"

I just added a warning into the “HB Add Subface” component for the case that surfaces are not matched with a parent Face:

I will try to take a look at your geometry when I can but, if you’re only running DF, then it’s more work than it’s worth to build your model with hierarchical relationships. You can just keep your model flat (the first option that I describe here).

As long as geometry represents walls, roofs, or floors, you should model it as a Face since Faces get their default modifiers assigned based on their normal direction. Granted, if you are overriding the modifier anyway, it doesn’t matter much. But anything that’s not a wall, roof, floor, aperture or door should be modeled as a Shade (including indoor furniture, exterior shades, surrounding context like trees, etc).