Remember, the UMA RPT policy is just step one--it is the policy that controls the **back-channel** decision to grant access. If you want to interact with the user, the UMA client needs to redirect the user (Rqp) to the UMA claims gathering endpoint, where the AS can display pages (for example, a page that says "Please wait for the RO to approve the release of this information"). How you would notify the RO, how the RO would approve, and how you would notify the UMA client to re-check for access, is all out of scope of UMA. UMA does not define how you express or implement policy.
I'm closing this ticket, because it's not appropriate to assign design questions to Gluu Support staff. But feel free to continue to comment on it.