Ariz. Rev. Stat. § 14-5410
A. The court may appoint an individual or a corporation, with general power to serve as trustee, as conservator of the estate of a protected person subject to the requirements of section 14-5106. The following are entitled to consideration for appointment in the order listed:
B. A person listed in subsection A, paragraph 4, 5, 6, 7 or 8 of this section may nominate in writing a person to serve in that person's place. With respect to persons having equal priority, the court shall select the one it determines is best qualified to serve. The court, for good cause, may pass over a person having priority and appoint a person having a lower priority or no priority. For the purposes of this subsection, "good cause" includes a determination that: