Iowa Code § 602.2103
A quorum of the commission is four members. Only those commission members that are present at commission meetings or hearings may vote. An application by the commission to the supreme court to retire, discipline, or remove a judicial officer, or discipline or remove an employee of the judicial branch, or an action by the commission which affects the final disposition of a complaint, requires the affirmative vote of at least four commission members. Notwithstanding chapter 21 and chapter 22, all records, papers, proceedings, meetings, and hearings of the commission are confidential, but if the commission applies to the supreme court to retire, discipline, or remove a judicial officer, or to discipline or remove an employee of the judicial branch, the application and all of the records and papers in that proceeding are public documents.
Iowa Code § 602.2103
83 Acts, ch 186, §3103, 10201; 92 Acts, ch 1228, §32; 98 Acts, ch 1047, §54