Section 767(a) in Police Regulations, Bengal , 1943
(a)Appointment in the Upper Division clerical establishment in the office of the Deputy Inspector-General shall be made by the Deputy Inspector-General concerned generally by promotion of Lower Division clerks already in his office. If no suitable Lower Division clerk fit for promotion is available, then only the posts should be filled up by transfer of Head Clerks/Accountants/Reader Clerks (if willing and found suitable) in the offices of the Superintendent of Police's/Commandants within the Range or Brigade.
