[ceph-users] Prevent users to create buckets

Hello, I am using Ceph RGW for S3. Is it possible to create (sub)users that cannot create/delete buckets and are limited to specific buckets? At the end, I want to create 3 separate users and for each user I want to create a bucket. The users should only have access to their own bucket and should not be able to create new or delete buckets. One approach could be to limit the max_buckets to 1 so the user cannot create new buckets, but it will still have access to other buckets and will able to delete buckets. Any advice here? Thanks! Sinan