a. The commissioner, and his or her deputies shall have the power to issue subpoenas, attested in the name of the commissioner and to exact and compel obedience to any order, subpoena or mandate issued by them and to that end may institute and prosecute any proceedings or action authorized by law in such cases. The commissioner, and his or her deputies may in proper cases issue subpoena duces tecum. The commissioner may devise, make and issue process and forms of proceedings to carry into effect any powers or jurisdiction possessed by him or her.
b. The commissioner, each of his or her deputies, the chief clerk, and the first and second deputy clerks of such department and hearing officers of the division of licenses or any superior officer of the rank of sergeant or above specifically designated by the commissioner, are hereby authorized and empowered to administer oaths and affirmations in the usual or appropriate forms, to any person in any matter or proceedings authorized as aforesaid, and in all matters pertaining to the department, or the duties of any officer or other person in matters of or connected with such department and to administer oaths of office which may be taken or required in the administration or affairs of such department, and to take and administer oaths and affirmations, in the usual or appropriate forms in taking any affidavit or disposition which may be necessary or required by law or by order, rule or regulation of the commissioner for or in connection with the official purposes, affairs, powers, duties or proceedings of the department, or of such commissioner or member of the force or any official purpose lawfully authorized by said commissioner.
c. Any person making a complaint that a felony or misdemeanor has been committed may be required to make oath or affirmation thereto, and for this purpose the commissioner, each of his or her deputies, the chief clerk, or deputy clerks of the department, the inspectors, captains, lieutenants and sergeants shall have power to administer oaths and affirmations.