Limit "View Requisition - All" role by Procurement BU

Our client, the IESE Buiness School, wants to use the custom role we have created with th privilege "View Requisition - All". The issue, however, is that this client only has one Requisition BU, so if users were given access, they would be able to view all requisitions, which is not what they want. This is why they have asked if it is possible to limit data access by Procurement BU, since they have different Procurement BUs, opposed to the single Requisitioning BU. Is there any Data security Policy that allows us to do this?

Thank you for your help.