A Maintenance schedules schedule created by an operator should adhere to scoping rules
When an operator creates a maintenance schedules schedule this is only visible to that person. As a result this can also only be changed by that person.
Only when an administrator creates a schedule this is visible to other administrators.
It would be good that when an operator creates a schedule this is visible by members of his user role or even better it adheres the scoping structure. This would allow colleagues of the same team to modify schedules.