To add to our discussion on staff photos at http://auntiekate.wordpress.com/2012/10/23/now-we-gather-all-together-for-our-staff-photo/ , here's some suggestions on how to group your group. :-) Group photo posing cheat sheet
This is a nice-looking living room with smaller rug. Perhaps the key is to frame the rug with sofas / sofa and armchair combo / sofa and the window. And another trick is to fill up the room so the size doesn't look awkward.