whitelist button missing in qms

SLES appliance version 95 (latest). In the QMS a user can be given the rights to whitelist certain emails. But In the list of emails there are only buttons for 'release','blacklist','forward' and 'delete'. 

How can a user with these rights whitelist an email? Even when clicking on 'whitelist' in the digest emails an error occurs.

Am I missing something?