Five (5) members shall constitute a quorum, and a majority of those present shall be necessary to reject any application. All regular meetings of the board shall be held at least quarterly upon the call of the president, except the first meeting of the original appointees which shall be called by the Governor. The members of the board shall be entitled to a per diem of Forty Dollars ($40.00) for each day's service in attending meetings of the board and for conducting examinations for professional certificates, and shall receive reimbursement for necessary expenses and mileage as is authorized by law.