The commissioners shall elect a chair to preside at its meetings who shall not be the bar pilot commission member. It shall be the duty of the chair to supervise the official conduct of all the officers and employees of the commission. The chair may administer official oaths to the officers and employees of the commission, except the other commissioners, and to all other persons in relation to the business of the commission. In the absence of the chair, the remaining commissioners shall select from their number an acting chair to hold office during the absence of the chair. The acting chair shall have all the power and authority possessed by the chair.