Section 745A(b) in Police Regulations, Bengal , 1943
(b)Method of recruitment. - Vacancies shall be filled by promotion from the rank of constable. An Approved List of constables fit for promotion to the rank of naik shall be prepared in each district in accordance with Appendix XLVIC and promotion shall be made from it on the occurrence of a vacancy in the order in which the names are arranged. No constable whose name is not in the Approved List shall be permanently promoted to the rank of naik.
