Notice to appear required before petition hearings; failure to give notice bars appearance without judicial leave. Persons intending to appear at a petition hearing must serve a notice of intention on the petitioner or advocate at the address in the advertisement, containing the person's address and signature, using the prescribed form with variations as needed; persons opposing the petition must supply grounds of opposition or a copy of any affidavit. Non compliance bars appearance at the hearing except with the leave of the Judge.