I think I still have an addon that lets me hotkey assignment of raid icons.

But to target them, I don't know.

Since your party leader is assigning raid icons using a mouse, or by using pressing buttons to assign icons, your remote can do something else and set focus on that party leader's target.

Tank is leader
Mage1 is dps
Mage2 is dps


Let's say there are Mob1, Mob2, and Mob3.
Use Key F6, F7, F8, F9.

Key bindings for Tank
Tank.F6 = Assign Skull. /focus
Tank.F7 = Assign X

Tank.F8 = Assign Square

Tank.F9 = /cast [target=focus] Charge

Key bindings for Mage1

Mage1.F6 = none

Mage1.F7 = /assist Tank. /focus

Mage1.F8 = none
Mage1.F9 = /cast [target=focus] Polymorph

Key bindings for Mage2

Mage2.F6 = none


Mage2.F7 = none


Mage2.F8 = /assist Tank. /focus

Mage2.F9 = /cast [target=focus] Polymorph


Now when you're ready to engage, you press F9
The tank charges Mob1, Mage1 sheeps Mob2, and Mage2, sheeps Mob3