Section 7(6)(a) in Indian Broadcasting (Programme) Service Rules, 1990
(a)(i)Officers in the filed of promotion to the Junior Time Scale of Programme Management Cadre of All India Radio or Doordarshan shall be required to convey in writing their choice in the order of preference for working in the Programme Management Cadre or in the Programme Production Cadre of either of the two media.(ii)The Department Promotion Committee, as specified in Schedule VI, Shall, after due consideration of the preference and suitability thereof for acceptance, will recommend the cadre as well as the media in which they shall be appointed on promotion.