Select Members of Group 53

Selects the channels that are members of group 53.

Overview of groups in Logic Pro — Apple Support

You can also automate a group. This lets you easily set the change for parameters of a group of channel strips over the course of a project. For example, you may wish to group all of your guitar channel strips together and have all of their relative volumes change at the same time throughout your project. For more information on automation, see Overview of automation in Logic Pro.

I don’t think I appreciate the enormous numbers of tracks and channels that can be involved in a project. I might get 30 to 40, but quickly reduce my efforts by busing them in appropriate ways.