Form Interrogatories are a list of questions on a court form. It helps if you fill in the top part of the form with the case and court information.Access to Forms The Superior Court of Orange County offers several options to assist the public in completing court forms. After the Affidavit of Service is done, it must be filed with the Court. Step-by-Step Instructions. Be sure whoever serves the document fills out and signs this proof of service. , §§ 1985.3, 1985.6) Method of Service: United States Mail 1. The requirements for interrogatories are set out in Rule 9-3. Interrogatories are numbered written questions sent to the other side. A motion can be used to ask the court for anything that a party needs in a case.