Auto Attack disable / Targeted as question

[Quauhtli]

q1 Where can I find the Trigger - Action Disable Auto Attack (< something like that) ?
(I'm pretty sure it exists, if it doesn't is there another way to disable auto attacking?)

q2 There are three main units in my map. I would like it so that the Attackers can only attack the Escapers and the Escapers can only attack the Prisoners and that the Prisoners can only attack the Attackers.
I've tried various Targeted As things but none seem to work (perhaps I'm doing the wrong ones (I've tried Debris, Structure, Ward < all + Ground (maybe that is why))). Is there (if what I said before isn't the problem) another way to do this?

 

[Romek]

1. Change acquisition range to 0.

2. Make one of them Flying, one Ground and one Ancient/Tauren/spell Immune.

And make the targets of each ones attacks to the one they can attack.

 

[Quauhtli]

Thanks.