A majority of the commission shall constitute a quorum to transact business, but no vacancy shall impair the right of the remaining commissioners to exercise all of the powers of the commission; and every act of a majority of the members of the commission shall be deemed to be the act of the commission. The commission shall have a secretary who shall keep a record of all proceedings, transactions, communications and official acts of the commission and who shall be custodian of all records and perform such other duties as the commission may prescribe.
235 ILCS 5/3-3