Does that also work if you are in say a GF group of 4?

I was in an ops group and the ops leader was able to position the people in the frames where we wanted them. As a healer I wanted tanks listed on top and the healers on the bottom. I just recently switched to ops frames for groups (should have done that a long time ago). What I can't figure out is how to reorder the people in the group so I am listed last and the tank is listed first. How do you switch the positions??? thank you.