How do I file a Petition to Establish? Step 1: Follow the instructions in this packet to fill out the necessary forms.The link provided will send you to the accepted legal decision making and parenting plans ( custody ) for your location. You will still need to file a "Petition to Change Custody. " These forms are available at the Self-Service Center. Use this form if you want to get a court order that includes custody, parenting time and child support along with the. To file for temporary custody, follow these steps. 1. Fill out the paperwork. Custody, each party filing a Petition or Response shall file an original and one copy of an. The Pima Community College Catalog contains descriptions of the College's programs, courses and academic policies.