You will need to create a team for each of the groups you want to work with

Paladin + 4 shaman
Paladin + 4 warlocks and so forth.

The booster will need to be in the group you setup using ISboxer in the quick setup section.

If you do not want to do this way. Just setup a /follow Maintoon and put it on a key you dont have to use.
Thats the easiest way to get new groups going without having to reload your new team to power level.

atleast that i've found.