Iowa Code § 633B.111
1. A principal may designate two or more persons to act as coagents. Unless the power of attorney otherwise provides, all of the following apply to actions of coagents:
2. A principal may designate one or more successor agents to act if an agent resigns, dies, becomes incapacitated, is not qualified to serve, or declines to serve. A principal may grant authority to designate one or more successor agents to an agent or other person designated by name, office, or function. Unless the power of attorney otherwise provides, a successor agent:
2014 Acts, ch 1078, §13