Open the Toolkit.
And select your Character Set.

In the bottom left pane, click on a character slot number.
On the right, you'll see: (Checked) When I switch to this character... (and) Do this Mapped Key.

One option is: Follow/JambaMaster.
Another is: JambaMaster.

If you point to the Follow/JambaMaster, then on a switch the slaves follow the new master.
If you point to JambaMaster, then there is no follow automatically upon switching to a new master.




If you want to sometimes have Follow enabled on switch, but sometimes not...
And to have a toggle for that...
That's a little more complicated, but can still be done.