AOE , and how does it work in 5-multuiboxing?

I'm just starting out with wow and multi-boxing and have started a 1priest+4mage team..
My question is,,How do i cast/and set down AoE using an AHK or Keyclone (1 computer) set up.. unlike just casting a spell where i only need to press a keybind (i.e 1 = fireball , 2=frostbolt) and have that same action on all other mages.. with AoE , as i understand, i will need to set it down using a mouse click..
Now how do i get to do that using this kind of set up.. is there a way to do it so all mages cast and then set the AoE on the same spot at the same time.. or will i have to open each mage screen individulay and have the AoE positioned that way..
i'm using one screen to control the priest(as main),, and having the mages follow and cast on demand..(while their client windows minimized)..

Some discussion of this in another thread:

http://www.dual-boxing.com/forums2/v...fc33d89b49240e