ar9(2)(cd)
(cd) If an assembly member of an assembly committee or a joint committee is unable to serve, the speaker may select a temporary replacement for a member of the majority party who is unable to serve from among those members of the same party and may select a temporary replacement for a member of the minority party, upon recommendation of the minority leader, who is unable to serve from among those members of the same party. The replacement takes effect when the member who is a temporary replacement answers the roll call of the assembly committee or joint committee and terminates upon the adjournment of the assembly committee or joint committee meeting or the return of the member who was unable to serve, whichever occurs first.