Displaying a Scheduling Overview from the Maintenance Plan 
Maintenance plans
® DisplayMaintenance plans
® ChangeScheduling
® ScheduleYou reach the Maintenance Schedule screen.
The system displays the graphical maintenance scheduling overview.

If you have called up the scheduling overview using Schedule or Change maintenance plan, you cannot make any changes.
If you display the graphical maintenance scheduling overview directly from the maintenance plan, you can make changes.
For more information, see
See also:
Working with the Graphical Scheduling Overview Variant Maintenance for Scheduling Overview