Section 4(2)(iii) in Bihar Home Guards Service Rules, 2005
(iii)25% posts of the cadre strength of Havildar (Clerk) and Havildar Instructor will be filled up by promotion of Sepoys, whereas promotion to the post of Havildar (Instructor) will be considered on the basis of seniority and fitness. For promotion to the post of Havildar (Clerk) departmental examination prescribed in the Police Manual will be taken. The Remaining cadre strength will be filled up by direct recruitment. If sufficient number of fit Seopys are not available for promotion then with the permission of the Government, direct recruitment percentage may be increased.