The Commission shall meet at least quarterly and at other times as called by its chair or by four of its members. In the case of a vacancy in the chair, meetings may be called by the vice-chair. Five members of the Commission constitute a quorum. (2006-201, s. 1; 2017-6, ss. 4(c), 5(c); 2018-146, ss. 3.1(a), (b), 3.3(c).)