[ART] Many questions

[WALP]

I cant seem to help you if you are not more specifik then that it does not work.

I had the window pane to be attached to it. I cannot set them to be seperate entities.

Ah you mean that the window is part of the same object/mesh? in that case:
-Go into edit mode
-select what you want to seperate(in this case the window plane)
-press p to bring up the seperate menu and choose "Selection"
-Exit edit mode

the plane should now be a seperate object