Ok, now it makes sense.

The unit frames decypher which party(#) they are.

Now, the question...

Is there a way to make sure that my two toons will always be in a specific spot?

I have Pitbull setup to organize them by name. But if someone has a name that begins with A, then it alters how my healing macros go.

What can I do?

(Aside from doing full on F Keys + following with a heal.)