Restrict data access for buyers based on inventory org and user combination

Summary:

Restrict data access for buyers based on inventory org and user combination

Content (please ensure you mask any confidential information):

We have a business requirement and highly appreciate any inputs.

We have a BU with two inventory orgs (e.g. Hyderabad, Bangalore) with one buyer sitting in each inventory org (Hyd Buyer, Blr Buyer). Lets say Hyd buyer is placing orders/creating AGTs with Amazon supplier and Blr buyer is placing orders/creating AGTs with Flipkart. 
Our requirement is — Hyd buyer should be able to see all POs/AGTs placed for Hyd org only, Blr buyer should be able to see all POs/AGTs placed for Blr org only.