Hi Frederich!
I'm not sure if I understand what you're asking, but if your intention is just to make the door rotate, I can tell you that it's simply a matter of knowing how to use the Inventor constraints, but if you want to do all the technical drawings as well, it takes a bit more info and description to understand it all.
Finally, as regards whether to make the door in part or in the frame generator, this is indifferent in my opinion, it depends on the complexity of the door, and on the executive technical drawings for the construction that you want to have in order to be able to print and make in the workshop.