I have an irregular shaped building with over 20 faces, and 3 floors. However, on one of the faces, there are only 2 floors and the roof comes down to meet it. I have tried making the third floor of that particular face NIL, but the roof still hangs over it. I want to be able to push the face of the third floor back about 5 meters and on top of the second floor.
I'll attach a picture of what my building looks like, and hope someone can share a bit of CGA knowledge that will let me just take the face of the third floor and show it back 5 meters or so back from the face of the third floor.