Release strategy based on costcentre for PR

Hi Experts

I want to add Cost Centre as my release criteria in the existing release strategy . Presently I have Purchase grp and amount as my release criteria . Pls advise me how to proceed on this . Kindly also let me know how the user can be mapped to cost centres for approval as the user wants to have different approvers for different cost centres. We have searched for the authorisation obj for cost centre but could not get mor information .Pls help .

Thanks

Edited by: Devashish  Lenka on Sep 6, 2010 2:10 PM