Allow server operators to schedule tasks (domain controllers only)
Computer Configuration\Windows Settings\Security Settings\Local Policies\Security Options
Determines if Server Operators are allowed to submit jobs by means of the AT schedule facility.
By default, you must be an administrator in order to submit jobs by means of the AT scheduler. Enabling this security policy setting allows members of the Server Operators group to submit AT schedule jobs on Domain Controllers without having to make them Administrators.
This policy is not defined by default.
This security option only affects the AT schedule facility, it does not impact the Task Scheduler facility.