Section 21-6 - Membership, quorum, voting(a) An investigating committee shall consist of not less than five members.(b) A quorum shall consist of a majority of the total authorized membership of the committee.(c) No action shall be taken by a committee at any meeting unless a quorum is present. The committee may act by a majority vote of the members present and voting at a meeting at which there is a quorum, unless the provisions of this chapter or any other statute require a greater number or proportion.