Role Switching

Hello,

AR-9.2, TR-9.2.5.6, AS400 DB2

Currently in our scenario we have separate role for Finance, Sales, Inventory, Purchase, Manufacturing ,Quality and Object of each Role like application |Report of Finance, Sales, Inventory, Purchase, Manufacturing ,Quality is being segregate /separated by menu filtering ..means Finance Role login will see only Finance related Objects and vice versa for Inventory ,Purchase and so on....We have total 12 BU and each one is having there own role.

Now Query is suppose One user is working for 3 BU (like -Sales, Purchase ,Inventory, Manufacturing) and he is having 12 roles (each BU has its own roles and security setup).