How to Secure orders by project instead of by department.

Summary

We could grant buyer and procurement agent access per business unit, such that user can access to all purchase documents for the department. Yet some users are only assigned to particular project instead of department, it is not appropriate to grant them the access of the whole department. They should access only to orders for a particular project. Note: They also need to view other agents' document for that particular project, so we could not restrict to self only.

My question" Is it possible to secure access by project?

If not, is there any workaround?

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