Is there a good way of using healbot on my main (tank) that allows the healer (1 of 4 slaves) to heal anyone in the team with either a click or a key?

A bit of a n00bish question, but I haven't used the addon in question yet and sitting at work planning a redesign of my UI ;-)

All the guides here seem to refer to IS Boxer, and I'm not sure if I want to swap boxing software :P