Associate the assembly to a wall. Open the wall in elevation view. You may need to change the placement settings to "free style". click on the assembly to highlight it and you should be able to move it. After highlighting the assemble you should be able to look in the upper left of the screen and see its position relative to the room.
I tried all of that before and nothing.So then I associated to the wall beside it,and there it was.So I unassociated wall #1,then associated it back and then it was there.
Thanks Damon for getting me on the right track.