The board shall hold regular meetings in each month and such other meetings as it deems necessary. A majority of the members shall constitute a quorum for the transaction of business at any meeting; provided, that no pension, annuity, or benefit shall be allowed or granted and no money shall be paid out of the fund unless ordered by the affirmative vote of a majority of the total membership of the board as shown by roll call entered upon the official record of proceedings of the meeting at which such action is taken. All board meetings shall be open to the public.
40 ILCS 5/6-178