If you don't want it to switch following when you switch characters, you're going to need to change the Mapped Key that gets used each time you switch characters. It sounds like you have the full-featured one, but if you're going to be drinking and switching characters and wanting it not to start following you when you switch, then you are going to need to drop the follow on switch. This can be done by either running the quick setup wizard again and NOT checking the follow+strobing options, or change it per Slot in your Character Set to just "JambaMaster" or such instead of Follow + Master + Strobe.

I fully understand that you normally want it but would like to temporarily disable that, and I'll be sure to add support in the future. Until then if you want this kind of control you will need to manually have them follow, or just not drink+switch