Hey Duall-boxing mates

I have a prot and holy pala on same lvl, same quest progress
so i would like to boxing dose 2.

But i have a problem im not the best the english, and dont understand the macro 100%
so u would like to ask if u could help me a little

I want to play as the tank, and the slave should heal me then i make a aoe pull..

but how could i get that to work .?

please help me, if u can, i would be glad
thx anyway