The first thought would be to enable group-editing on the foldertrack like this:
But that only works if all the events are perfectly aligned
Feature Request: Using FolderEvents to Slip contained Events
I think the FolderEvent slip should be limited to whichever event has been max-slipped. ie, once one event runs out of slip, the others stop slipping.
FolderEvent Fade Handles adjust All Events within FolderEvent Range:
Modified Click - Select All Events within FolderEvent Range