Ind. Code § 29-1-1-19
Any person legally competent who is required to be served with notice of any hearing in a probate proceeding may in person or by attorney waive in writing issuance and service of notice of the hearing. A guardian of the estate or a guardian ad litem may make the waiver on behalf of a protected person. A consul or other representative of a foreign government, whose appearance has been entered as provided by law on behalf of a person residing in a foreign country, may make a waiver of notice on behalf of the person. Any person who submits to the jurisdiction of the court in any hearing shall be deemed to have waived notice.
As amended by P.L.33-1989, SEC.32.