[Skip]

Is this what you want for the custom group? Settings>library settings>custom group name [5th one down].

EDIT: It sounds to me like you want to make setlists in the Companion [which is basically a tool to upload a group of files to MSP on an android device]. If that is true I can't see any advantage since you can do the same thing on the tablet and not have to find a way to load them from the PC to the tablet. You can make and select specific file folders that contain the particular songs you want in a list and have them loaded, when a hot spot becomes available, as a set list already.