As far as movement goes, we have directional movement, which depends on facing.
Or follow.

The easiest will be to spread your toons out.
And then have a key for everyone to follow a specific toon.

You could go with a follow keymap if you want.
It sends the arrow key to the "lead" toon, who isn't your tank.
And it sends /follow "Lead Toon Name", to your other slaves.
Could do the same with a warcraft macro and creative keybinding, if you wanted.




Would this work, or hang on the Inner Focus?

/cast Inner Focus
/cast Prayer of Healing