law: Custom Act, 1962 
  3.
  
  Classes of Officers of Customs. – 
  There
  
  shall be the following classes of officers of customs, namely :- 
  (a)
  
  Chief Commissioners of Customs;
  (b)
  
  Commissioners of Customs;
  (c)
  
  Commissioners of Customs (Appeals);
  (cc)
  
  Joint Commissioners of Customs;
  (d)
  
  Deputy Commissioners of Customs;
  (e)
  
  Assistant Commissioners of Customs; and
  (f)
  
  such other class of officers of customs as may be appointed for the purposes of
  
  this Act.