The director of motor vehicles, with the approval of the commissioner, shall appoint the following assistants, who shall be classified employees:
I. An assistant to the director of motor vehicles, who shall carry out such duties as may be assigned to him or her by the director.
II. A financial responsibility supervisor who shall assume, under the control of the director of motor vehicles, the responsibility of the administration of the motor vehicle financial responsibility law. The director may delegate to said supervisor authority to sign and execute any documents pertaining to his or her work and such documents so signed by the supervisor shall have the same effect as though signed by the director.