Have you ever wanted add or remove a track from a group in Pro Tools, and ended up creating a new group and then deleting the old one in order to do so? What a pain! Well, it is possible to edit a group. To do this, select all the tracks you now want to be in that group in the normal way (which is so much easier with the new multiple selection options in Pro Tools 6.9!) and use Command+G (PC: Ctrl+G) as if to create a new group. Now change the group ID to match the group you want to edit. Finally, click OK and that group will contain the new selection of tracks.