Well, if you want to use a Repeater Region to heal.
Then each box needs to refer to the same toon (from top to bottom) on every screen.

There's no point in clicking the frame that needs a heal (on the current screen), but the 3rd box down on the healer is a different toon who doesn't need heals.

Each of the options (Vuhdo, Healbot, GridCustomLayouts) has an option, which once you set is good forever and won't need to be reconfigured. Then you're set.