I'm attempting to create a hollow metal door family(s). For stud wall construction, I want the door to centered about the centerline of the wall. This is simple to do. For masonry or cavity wall construction, I want the face of the frame to extend 1/2" beyond the face of the wall. How do I go about doing this? I've tried constraining the dimensions, but the door still comes in with the frame centered about the wall centerline.