Section 16(1)(ii) in The Indian Foreign Service Branch 'B' Rules, 2017
(ii)33.33 per cent through Limited Departmental Competitive Examination to be conducted by the Commission from regular Personal Assistants of the Stenographer Cadre of the service who on the crucial date possess a Bachelor Degree of a recognised University and have rendered not less than five years approved service in that grade and undergone and successfully completed such mandatory training programme(s) as may be prescribed by the Ministry of External Affairs.