Section 3(1)(b) in The Indian Forest Service (Appointment By Promotion) Regulations, 1966
(b)For Union Territories-(i)Joint Secretary in the Ministry of Home Affairs dealing with Union Territories;(ii)Inspector General of Forests or Dy. Inspector General of Forests;(iii)Chief Secretary of one of the Union Territories;(iv)A senior member of the Service not lower in rank than a Conservator of Forests :