Default Cost center

Hi Experts

The purchase requisitions are created by the responsible users from various departments in the organization and it should go for approval to the concerned department manager. So we defined the separate purchasing groups for individual departments.The users can request for any sotckable / Non-stockable / Assets through PR.

While creating the PR we need to default the cost center based on the purchasing group. 

Any clue on this?

Regards

Harshini