Allow users in usermin to specify start- and enddate for autoreplies

If a user logs in in usermin he/she can setup an autoresponder in Mail Forwarding and Replies, but cannot set an start- and enddate. The domainadminstrator can from virtualmin. I can’t find an option to enable this feature in the usermin settings. Is this possible?

bump. Is this really not possible?

It should be based on just checking against a list/database table/etc when *min runs it’s 5 minute or other checks.