1 . OFFICIALS - ACTIONS - PRIOR COMPLAINT THROUGH OFFICIAL CHANNELS - TIME-LIMITS - MANDATORY - EXPIRY - RE-OPENING - REQUEST UNDER ARTICLE 90 ( 1 ) OF THE STAFF REGULATIONS - NOT PERMISSIBLE ( STAFF REGULATIONS OF OFFICIALS , ARTS 90 AND 91 ) 2 . OFFICIALS - ACTIONS - PRIOR COMPLAINT THROUGH OFFICIAL CHANNELS - TIME-LIMITS - STARTING POINT - REQUEST FOR RECLASSIFICATION - LATE - EXPIRY OF TIME-LIMIT - RE-OPENING - CONDITIONS - NEW FACT ( STAFF REGULATIONS OF OFFICIALS , ARTS 90 AND 91 )