Haw. Rev. Stat. § 560:5-111: Effect of acceptance of appointment.

By accepting appointment, a guardian or conservator submits personally to the jurisdiction of the court in any proceeding relating to the guardianship or conservatorship. The petitioner shall send or deliver notice of any proceeding to the guardian or conservator at the guardian's or conservator's address shown in the court records and at any other address then known to the petitioner.