Can DFF be added in the Area of Responsibility Page?

Is it possible to add DFF in the Area of Responsibility Page?

We have a flex field we would like to use for AoRs for our security set-up. It's used to identify HR employees so that we can exclude them from the AoR for the Business Unit (so they cannot view information for other HR employees). This Flex field would allow us to identify HR who SHOULD have full access to the Division (including other HR) and who SHOULD NOT have this access.

Thank you!