Help w/"Profile settings > Manage app groups"

Hey Guys,

Excuse me if there's already a thread on this. I looked and couldn't find one.

I'm just trying to figure out what these settings are for?

When I'm at my homepage and go to: - Settings > Profiles > Manage app groups. And then look at the various app groups, I'm not sure what any of them do?

What's the point of these app groups and how are they useful?

Thanks for the help!!