How to restrict Procurement Contracts users wise?

Dear All Experts,

We are using repository contracts in procurement contracts R12.2.4. And there are multiple users who are importing the contracts.

Now we have requirement that we need to restrict the user on basis of department, means when department1 user is uploading documents for only department1, and department2 user can not see department 1 contracts and wise verssa.

Department information can be tagged in to physical location mentioned in repository contracts.

Or is there any other way around to restrict the contract will be much appreciable.

Thanks in Advance