To make a Mix Group click on a track name, then shift-click on any other track names that you'd like to treat the same, then hit Command-G to make those tracks into a group. When grouped, any automation will apply to all tracks in the group together. You can automate several channels together by making a Mix Group. To display the Mix window, choose Window> Mix. To display the Edit window, choose Window>Edit. The Edit and Mix windows are the two main work areas in Pro Tools.
