Section 6(2)(a) in The Tripura Courts Stenographers' Service Rules, 1983
(a)permanent post in Higher Selection Grade of the Service shall be filled by the departmental candidates holding substantive appointment as Stenographer in the scale of pay of Rs. 425-850 immediately before the appointment day, who may be screened for such appointed by the Departmental Promotion Committee on the basis of seniority subject to the rejection of the unfit;