Select Members of Group 30 – Logic Pro keyboard command of the day

  Select Members of Group 30

Selects all of the channels that are members of group 30. Once you get to 30 groups you may have some other workflow issues. I tend to keep the Group Inspector open in a separate window when I have more than 7 groups assigned. I try to name them so they make some sense.

Overview of groups in Logic Pro – Apple Support

You can have a maximum of 64 groups. A channel strip can also be a member of multiple groups.