The board and its committees shall act only at meetings called as provided by applicable law and the bylaws of the board of regents, and all matters coming before the board or its committees for action shall be determined by the majority vote of its members present, the members present being not less than a quorum, except as otherwise specified in the bylaws of the board of regents. The member of the board who is presiding at a meeting shall be entitled to make motions, second motions, vote, and otherwise participate in the meeting to the same extent as the other members of the board. The student regent shall excuse himself or herself from participation or voting on matters relating to the hiring, discipline, or tenure of faculty members and personnel.