If you create an Action Target Group, for your healer toon or toons.
You can select that as the target for the click.
And combine that with KVM mode (check the square).

The KVM mode means the local window will ignore that click.
So your target is not changed while on your tank, and trying to have your healer heal you.

But because the target is an ATG, it goes to all members of that group.
So if you happen to have a team where 3x Elemental Shamans are the healers (like mine).
Clicking a heal region from any shammy, sends the click to all three... even though none of them actually change targets.

Without KVM, the lead shammy (or whichever window you are in), would change targets when clicking on the Grid frame.




The example on the action bars is straight click passing. It is not running mapped keys. Basically, when you click on 1, via the keyboard, in IS Boxer it is doing a mapped key.

The mapped key tells the other windows to assist the window in which the key originates from, and then to do whatever is on that same keybind.

By broadcasting the click, every window is telling all of the others to assist them and then do whatever is on the same key.

If you click a button (and broadcast the click), and the button does not have an assist component, then passing clicks this way will work just fine. I have buttons which have tiny repeater regions over them, for doing dailies or for clicking my hearthstone.

In the example video 1, any of the keys which have a Repeater Region over them... would function completely fine, if they were activated via keyboard click.




The newest feature for IS Boxer is click boxes.
These are graphical regions on the screen, which are tied to mapped keys.
So when you click on one, it is the equivalent of pressing a hotkey to activate that specific mapped key.

Clicking on one of these will assist properly.
Assuming you'd rather be clicking then pressing your keyboard keys.