The Legislative Budget and Audit Committee shall have two alternate members in addition to the members designated in AS 24.20.161. The president of the senate shall appoint one alternate member from the senate finance committee and the speaker of the house shall appoint one alternate member from the house finance committee. The alternate members shall serve on the committee when a meeting of the committee has been called and the chairman determines that there will not be enough members in attendance at the meeting to provide a quorum. While serving as alternates, the alternate members have the same duties and responsibilities as committee members appointed under AS 24.20.161, and they are entitled to the same travel and per diem allowances.