Reclassification requires elevated tracker privileges, for a good reason (can't have spambots reclassifying their own messages :)

If triage people don't have access to this function that should probably be changed.  At that point we could document that the way to request reclassification is to post a new message asking for the reclassification.  Then a triage person can fix it.

(The interface, by the way, is accessed from the 'view' of the message, if you have the appropriate privileges.)