Iowa Attorney Appearance AO458 is a form for attorneys to use when filing an appearance on behalf of a client in an Iowa court case. This form is used to inform the court of the attorney’s name, address, and bar number, as well as the case name and number. The form also requests that the court send all documents related to the case to the attorney. There are two types of Iowa Attorney Appearance AO458 forms available: one for appearing in civil cases and one for appearing in criminal cases.