There is hereby continued an Advisory Board, hereinafter referred to as the Board, for the Department for the Deaf and Hard-of-Hearing. The Board shall be composed of nine members appointed by the Governor as follows: Four representatives of deafness-oriented professions concerned with the health, education, rehabilitation, mental health and welfare of the deaf and hard-of-hearing; four citizens who are deaf or hard-of-hearing; and one member who is a parent of a child who is deaf or hard-of-hearing. Appointments shall be for terms of four years. No person shall be eligible to serve more than two successive terms, except that a person appointed to fill a vacancy may serve two additional successive four-year terms. The Board shall meet at the call of the Chairman, who shall be selected by the Board from among its membership, but no less than four times a year.