I guess you the need direction of the Wall and then rotate your Family accordingly.
For the flipping. You can make it so the first (or last) Element in the list is always Flipped.
Also see this maybe ?
I guess you the need direction of the Wall and then rotate your Family accordingly.
For the flipping. You can make it so the first (or last) Element in the list is always Flipped.
Also see this maybe ?