Application User Community Controls in EBS R12.2

Greetings,

We have recently expanded the EBS to support International.  We are finding they have discovered they can "schedule" programs and request sets.  They have been told not to schedule and request the Administration support team to schedule anything yet they do not always comply.  This results them scheduling duplicate processes or worse processes that run back to back and stress our application.

Is there a way to restrict a user from being able to schedule programs or sets?  They need to run these throughout the night so they do need access to run just not schedule them.

All help is welcomed.