law: Custom Act, 1962 
  4.
  
  Appointment of Officers of Customs. – 
  (1)
  
  The Central Government may appoint such persons as it thinks fit to be officers
  
  of customs.
  (2)
  
  Without prejudice to the provisions of sub-section (1), the Central Government
  
  may authorise the Board, a Commissioner of Customs or a Deputy or Assistant
  
  Commissioner of Customs to appoint officers of customs below the rank of Assistant
  
  Commissioner of Customs.