Autorization Object M_BEST_WRK can be used in SES approvals?

Hello,

I would like to know if the same autorization object we use in Purchase order releases - M_BEST_WRK - can be used to separate the Service Entry Sheet releases by Plant? Or do we have to use antoher autorization object to asure that the service manager from plant 1 can not  release the SES belonging to plant 2?

Thanks for any reply.

Aart