Have the option to select a zone for a schedule.
Just like we can currently select 'Local Controller' or 'zone' for the push buttons and occupancy sensors primary targets.
Have this same choice when setting up schedules.
Eg: There is external lights on multiple controllers you wish to all turn on/off at the same time with the same schedule.
Currently each group required a schedule. If zone was an option we could limit this to 1 schedule.