When I place a window/door/etc. on a wall and type in the dimensions, sometimes it will move the edge of the wall instead of moving the window along the wall. (ie: if I have a 20' wall with a window on it, I want the length between the corner and the window to be 4'... instead of moving the window over on the wall, it will just extend the edge of the wall out past its original point so it's now 24'). Please help!! I'm not sure how to look up this issue so if there's a video on it already please direct me there!