Complete a Guided Interview that Creates Forms for You. All the necessary forms will be created based on your answers to the questions in this guided interview.There are certain forms you must fill out and file with the court to open a case. Joint Petitions for Custody Miscellaneous Forms. For information about how to fill out and file court forms, please read Basics of Court Forms and Filings. You can file a paternity or a child custody case. The instructions and all the forms needed to open a paternity or custody case are in this section. Step 2: Fill out the following forms: Confidential Family Court Information Sheet. Petition to Establish Custody and Visitation. The Fifth Judicial District Self Help forms are provided in .