The Board shall hold at least two regular meetings each year. Special meetings may be held at such times and upon such notice as the rules and regulations of the Board may provide. The Board shall elect annually from its members a chair, a vice-chair, and a secretary. A quorum of the Board shall consist of not less than five members. The Board shall operate under its rules and regulations supplemented by Robert’s Rules of Order. (1921, c. 1, ss. 3-6; C.S., ss. 6055(d)-6055(g); 1951, c. 1084, s. 1; 1957, c. 1060, s. 1; 1963, c. 843; 1965, c. 940; 1975, c. 681, s. 1; 1998-118, s. 6.)