Is there any option to secure corporate rates in oracle fusion?

Summary:

Currently customer have globalized business in multiple countries and conversion rates will be uploaded by separate team for all rate types. For some countries, they have their own conversion rate types and their own users needs to upload or update their own conversion rate types. But in fusion, if we provide the role, then the user can also update the "corporate" rates which are using global level.

Is there any option to secure the conversion rate type "Corporate"? So the user should be allowed to update or upload their own rate types.

Content (please ensure you mask any confidential information):