PO:Can Users Be Restricted to Only Be Able to View Puraching Document for Their Approved Document?

Hi,
In Fusion, we use an approval group to approve purchasing documents. Can only the PO document owner, buyer, subsequent approvers have access to their PO documents? In particular, the approver should be restricted to viewing/editing only his approved document.
For example, Manager1 can approve PO of Buyer1 and Buyer2, and Manager2 can approve PO of Buyer3 and Buyer4, so we need Manager1 can see only PO of Buyer1 and Buyer2, and Manager2 can see only PO of Buyer3 and Buyer4. How can we achieve this?

Thanks,
Best Regards,

Summer