Like the title says. Adding a track to a group track could/should be as easy as dragging it to a folder. Should save some clicking!
I agree. Also the other way, when you drag a track out of a grouped folder, it should route to the stereo mixbus.
*In my opinion this is never gonna happen unless Steinberg introduces “group folder track” as it is in other daw( Logic, Reaper, Studio One etc).
It’s such a practical thing, I really hope they add it