Are you looking to group in the BIAB Mixer, RealBand, DAW or Stand alone hardware devices (Mixer, MultiTrack)?
Hey Charlie! Good hearing from you!
I use Real Band mostly, so that's the video I need.
But it might be easier just to get a template file that is already set up with subgroups. Once I see a working example I'll figure it out from there. I can't bve far off, but whatever I'm missing, it's enough to keep me from getting the results I want.
A video, however, would be useful to more people, and could go into depth on the reasoning behind the steps.