(c) A minimum housing standards enforcement officer, under such title as the governing body shall prescribe, who shall be qualified by training or experience to interpret, administer, and enforce the provisions of such ordinance, code or bylaw, which shall be his or her principal duty and responsibility.
(d) Any other qualified department, officer, or employee of the municipality as the governing body shall designate, other than an elected officeholder, city or town manager, or member of the housing board of appeals hereinafter provided; the department, officer, or employee so designated may perform the duties of the public agency in addition to his or her other duties, with or without additional compensation, as the governing body shall determine.