character set's mapped keys question(ISboxer/WoW)

[Fuii]

Just create the new mapped key in the "ISB42 - Custom Hotkeys" keymap.
Combat Broadcast is a standard KM that will affect every team you may create[d].

And the character the action is applied to is pretty much the last thing to select.

KeyMap => Mapped Key => Key Step => Action(s) of Step => Settings for Action (including the targeted character(s))