View court forms and instructions to file a petition and serve papers to establish custody, parenting time, and child support in Maricopa County, Arizona. The link provided will send you to the accepted legal decision making and parenting plans ( custody ) for your location.Find out how to establish a child support order or medical support. Apply for Child Support. I don't have any experience with judges, but in general the processes are set up to be friendly to people filing their own paperwork. The first step in the process of the family court case is the initial filings. I agree with both answers above. Home > Self-Service Center > Child Support and Family Law Family Law Forms. Filing a family law case in the court. This document provides vital instructions on completing the Petition to Modify Legal Decision-making, Parenting Time, and Child Support.