At each meeting of the Board of Directors, the chairman of the Board of Directors or, in the absence of the chairman, the vice chairman of the Board of Directors, if any, shall act as chairman of the meeting. In the absence of both the chairman and vice chairman of the Board of Directors, the chief executive officer or, in the absence of the chief executive officer, the president or, in the absence of the president, a director chosen by a majority of the directors present shall act as chairman of the meeting. The secretary or, in his or her absence, an assistant secretary of the Corporation or, in the absence of the secretary and all assistant secretaries, an individual appointed by the chairman of the meeting, shall act as secretary of the meeting.