++++ 1 . OFFICIALS - RECRUITMENT - PROMOTION - TRANSFER - SEVERAL ELIGIBLE CANDIDATES - INTERNAL COMPETITION - IMMEDIATE ORGANIZATION - PERMITTED ( STAFF REGULATIONS, ARTICLE 29 ) 2 . OFFICIALS - RECRUITMENT - ASSISTANT TO AN OFFICIAL - RIGHT OF SUCCESSION - NON-EXISTENT ( STAFF REGULATIONS, ARTICLE 29 ) 3 . OFFICIALS - RECRUITMENT - POST - POST RESERVED FOR NATIONALS OF A SPECIFIC MEMBER STATE - PROHIBITION - SPECIFIC ABILITIES - REQUIRED IN THE INTERESTS OF THE SERVICE - PERMITTED ( STAFF REGULATIONS, ARTICLE 27 ) 4 . OFFICIALS - RECRUITMENT - CONDITIONS - THROUGH KNOWLEDGE OF LANGUAGE - LEVEL OF KNOWLEDGE REQUIRED ( STAFF REGULATIONS, ARTICLE 27 )