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 or Deputy Commissioner of Customs (f) such other class of officers of customs as may be appointed for the purposes of this | 
