Section 6(3) in Bihar Public Service Commission (Limitation of Functions) Regulations, 1957
(3)the general methods of recruitment to a service or post including the question whether recruitment should be made solely by (i) examination or (ii) selection or (iii) promotion or transfer, or partly by one of these methods and partly by another; and in the latter case, the proportion in which recruitment to any particular service should be made by each method and the relative seniority in the service of candidates recruited by different methods;
