[keezyrick]

I think the OP might be asking for a way to turn off the players not in group so they don't appear on his screen. Not their heath/mana etc, but the actual graphic of the toons.

If I understood that correctly, there is no way to do that. Nor should you need to in order to accomplish heals. YOu may not know that your group and raid windows allow you to target the person not just see their status. You should not have to see them in the encounter to click on them and perform a function.

Now if you are losing track of where your group is relative to the encounter, you might try a trick I have seen used. Just click each member that you want to be near and hit follow until it takes you to one of them. Then turn it off. If they are not within range of follow, you probably have bigger problems.