The way I solve this is I have bound a key to "interact with target".
You will also want to enable click to move.
I have an assist macro for my slaves to target my target then click the key bound to "interact with target" then use my follow break key.

so what happens:

I get a target
I have my slave assist
I click the "interact with target" key (this makes the slaves turn and run at the target.)
I use my follow break key so the slaves stop after they have turned to face the target.

hope this helps.