I'm sorry if this has already been asked, but when you talk to the questgiver on your main, do the slaves also talk to the quest-giver?
ZQB + 5box + talking to questgiver on all 5 = pain.

I mean I would settle for a command (that I could put in a macro/bind to a key) that would make my slaves talk/loot the target when pressed.

I'm rambling, sorry.