Enhancement Request #9188 was added in TPAM 2.5.919 to include separation of duties via Partitions.
From the 2.5.919 Release Notes:
BFER 9188 "Added partitions to TPAM. Partitions are a logical separation of objects within a single TPAM deployment. TPAM System Administrators control the rules around the creation of partitions with new global settings. (See the Global Settings chapter of the System Administrator Guide) Partition Administrators can perform equivalent functionality to the current administrator role, but only for objects within that partition they are assigned. For more details see the TPAM Administrator Guide and Partition Administrator Guide."