Iowa Admin. Code r. 657-1.8
The board may have a pool of up to seven alternate members, to include individuals who may or may not be licensed to practice under Iowa Code chapter 155A, to substitute for board members unable to participate in a contested case hearing. Utilization of such alternate board members shall be in compliance with Iowa Code section 155A.2A. Whenever there are fewer than seven individuals serving in the pool of alternate board members, the executive director may present to the board for approval a list of individuals eligible to serve in the pool. The board may select individuals to serve as alternate board members, subject to approval by the governor. The term of each alternate board member shall begin on the first day of the month following approval by the governor and shall last for three years or until the alternate board member resigns, whichever occurs first. An alternate board member may serve no more than nine years as an alternate board member. Upon approval by the governor of an alternate board member, the executive director may select that alternate board member to hear a contested case when a sufficient number of board members are unavailable to hear a contested case for any reason.
Iowa Admin. Code r. 657-1.8