To begin a custody action, fill out a Petition for Custody to specify what you're asking the court to grant. You may have to include other forms.The Orders are available as a . How do I fill out the custody petition? How do I file a petition for child custody in Tennessee? Please provide the referral number on the petition at the time of the filling. 2. All dependent and neglected filings are for TEMPORARY CUSTODY ONLY. 3. Forms and Applications. If using a mobile device to complete any of these forms, you may need to download a free PDF reader. If there is a case in which a child is potentially in danger, the first step is to get a temporary emergency custody order in Tennessee.