APO - Locking Planning Area

Question: Hello all,
I have a strange requirement from the project team:

We have a planning area which we do not want the users using during a certain point in time during the day. We do not want the users to be locked. We do not want the users to log out.

Is there a way to lock a planning area without user's logging out?

Planning area (APO_PAREA) is protected by the following authorization objects:

C_APO_FUN
C_APO_SEL2
C_APO_SEL3
C_APO_IOBJ
C_APO_CPY

System specifications:

SAP SCM 4.0
Kernel: 620

Thanks,
Sam

Answer:
SAP Security is not time dependent based on the hour. You can add and remove access based on the from-to date on the user master record but you cannot control it on an hourly basis without a lot of custom programming.

Sounds like you need to rethink your process.