Schedule Application Roles for Microsoft Graph

Role	ID	Purpose	Description
Schedule.Read.All	7b2ebf90-d836-437f-b90d-7b62722c4456	Read all schedule items	Allows the app to read all schedules, schedule groups, shifts and associated entities in the Teams or Shifts application without a signed-in user.
Schedule.ReadWrite.All	b7760610-0545-4e8a-9ec3-cce9e63db01c	Read and write all schedule items	Allows the app to manage all schedules, schedule groups, shifts and associated entities in the Teams or Shifts application without a signed-in user.