law: National Security Act, 1980
  9. Constitution of Advisory Boards
  (1) The Central Government and each State
  
  Government shall, whenever necessary, constitute one or more Advisory Boards
  
  for the purposes of this Act.
  (2) Every such Board shall consist of three
  
  persons who are, or have been, or are qualified to be appointed as, Judges of a
  
  High Court, and such persons shall be appointed by the appropriate Government.
  (3) The appropriate Government shall appoint
  
  one of the members of the Advisory Board who is, or has been, a Judge of a High
  
  Court to be its Chairman, and in the case of a Union territory, the appointment
  
  to the Advisory Board of any person who is a Judge of the High Court of a State
  
  shall be with the previous approval of the State Government concerned.