++++ 1. Officials ° Vacant posts ° Filling by promotion ° Consideration of the comparative merits of the candidates ° Introduction of a requirement not in the vacancy notice ° Not permissible (Staff Regulations, Arts 29(1)(a) and 45(1)) 2. Officials ° Actions ° Prior complaint through official channels ° Subject-matter and legal basis to be the same ° Submissions and arguments not appearing in the complaint but closely linked thereto ° Admissibility (Staff Regulations, Arts 90 and 91) 3. Officials ° Recruitment ° Criteria ° Geographical balance ° Posts in Grades A 1 and A 2 ° Filling thereof in consideration of candidates' nationality ° Not permissible unless in the interest of the service (Staff Regulations Arts 27, first and third paras, and 29)