Divisions may request, and POSCON may approve, any Sector within a Division to be marked as restricted. Once a Sector is marked as restricted, the POSCON servers will only allow ATC users with the explicit certification to Sign-In to that Sector.
The request for sector restrictions must come from the Division Manager in writing and both the Director of Training and the Director of Operations need to approve in writing. A Division must demonstrate that a user can achieve the sector authorization through training in a reasonable timeframe before any sector restriction shall be approved.
Considerations for a sector restriction may be:
Complexity of airspace
Volume of traffic
From time to time, the Director of Training and Director of Operations may audit sector restrictions to determine if the restriction is still warranted. As with the approval of a sector restriction, both the Director of Training and Director of Operations must unanimously agree that the restriction is not warranted for it to be removed.