Need Restriction for Role Access to Manage inventory value set(Avoid Global access)

Summary:

We are trying to create a custom role with the exact privilege required to access the “Manage Inventory Value Sets” task under Setup and Maintenance. While we identified a privilege that provides this access, it is granting global access across all modules, which is beyond our requirement.Our requirement is to provide access only for updating Inventory-related value sets, without extending global privileges. We attempted to restrict access using a Data Security Policy, but the role is still inheriting global access. Could anyone please help us, if there is any way to restrict the privilege specifically to Inventory value sets only,