Ok, there are some steps a little wrong. I'll look at updating the instructions some, but:
In your Copy of Activate Repeat.
Step 2,
Remove the Repeater Target action you set at the bottom, right click it, select Delete
Select the action "Change Button 2 in Button Set 'Toggles' -> all", right click, select Delete
Select the action "Change <NO BUTTON> in <NO CLICK BAR> -> all", right click, select Delete
Select the action "Popup Text -> isboxer&~dxnothing", change the text to "Broadcasting NewNew" (so you know it is different!)
Change the first action at the top to have a repeater target of point to "Group (others in):NewNew"
Select the action "Activate Repeat in Always On Key Map Set 2 -> all other", reselect the Always On Key Map in the drop down and then reselect the Activate Repeat mapped key in the drop down (I did this because it didn't seem to point correctly)
Then right click Step 1, select Delete.
So, once you have done the above, you should end up with something like:

- Eric.png (29.6 KiB) Viewed 18675 times
Then you should be able to on your active window of slot 3, press CTRL+X, and this will remove the character from the NewNew group. Then make slot 1 your active window, and press CTRL+A. Slot 3 should be excluded from the repeater action.
Now, to get the second part of the mapped key to reactivate repeater across all toons you will need to hit CTRL+Z a couple of times. The first hit will disable repeater, the second will reactivate it.
It's not really a perfect setup for what you are after I think, but once you get this first bit working a perfect setup will come.