Who is your "main" screen? If its the tank, then how do you go about healing the whole group... or individuals?

Also, do most people use /assist focus when targeting mobs so that you can easily switch between "main" characters if one dies? If so, how the hell do you do CC spells like sheep? You couldn't have a sheep target as a focus then use /assist focus to target a mob to dps.

Just trying to iron out my macro setup before my little guys get to Deadmines. As for another question, think I can run through deadmines at lvl 17 or 18 with 1priest, 2mages, 2locks? Could 2 VW's tank the instance? Looking for someone with experience in that.