Is there a macro to set the master in jamba?

I see that it has a checkbox for, "if focus changes, set focus to master." But, for me, if I'm playing on a toon that has focused itself I have issues with assist macros (the toon'll go nuts targeting everything from dead mobs, teammates, and critters)

So I'm looking for a macro like..

/jambasetmaster toonA
/jambasetmaster toonB

etc

Thanks!