ALL OF THE FOLLOWING DOCUMENTS MUST BE COMPLETED to file a Joint Petition for Custody: Cover Sheet - required. 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. Can I file for custody in Nevada? Is Nevada my child's "home state"? A court must address paternity, child custody, visitation, child support, and other child-related matters whenever parents file a court action. Step 2: Fill out the following forms: Confidential Family Court Information Sheet. Petition to Establish Custody and Visitation. File the motion with the court that issued the most recent child custody order. There is usually a filing fee.