Mich. Comp. Laws § 450.1527

Sec. 527. (1) Unless otherwise provided in the articles of incorporation or bylaws, the board may designate 1 or more committees, each committee to consist of 1 or more of the directors of the corporation. The board may designate 1 or more directors as alternate members of a committee, who may replace an absent or disqualified member at a meeting of the committee. The bylaws may provide that in the absence or disqualification of a member of a committee, the members thereof present at a meeting and not disqualified from voting, whether or not they constitute a quorum, may unanimously appoint another member of the board to act at the meeting in place of such an absent or disqualified member. (2) A committee, and each member thereof, shall serve at the pleasure of the board.