Use this procedure to reorient an opening along its X or Y axis.
Tip: You can also flip an opening along its X axis using the Flip grip that is displayed when you select an opening.
- To flip an opening along the X axis, select the openings you want to change, right-click, and click Wall Anchor
Flip X. 
Opening in original position, and flipped along its X axis
- To flip an opening along the Y axis, select the openings, right-click, and click Wall Anchor
Flip Y. 
Opening in original position, and flipped along its Y axis