1.  Waiver by person.  Except as otherwise provided in subsection 2, a person may waive notice under this Act in a record signed by the person or the person's attorney and filed in the proceeding.  

2.  Waiver prohibited.  Unless represented by an attorney, a respondent, an individual subject to guardianship, an individual subject to conservatorship, an individual subject to a protective arrangement instead of guardianship or conservatorship, an appointed guardian or an appointed conservator may not waive notice under this Act.