I HAVE PLACED WINDOWS AND DOORS BOTH SIDES AND NOW I NEED TO PLACE THOSE IN REMAINING OPPOSITE SIDES
If you allow AccuSnap to locate the 'opposite sides' the windows and doors will orient themselves to those walls.
When using AECOsim tools please watch the prompt at the left of the Status bar at the bottom of the application window, this will tell you what the application is expecting you to do next:
Regards
Marc