Order (Relief from Support Payments and Commitment). PDF. 4-16. Notice of Motion To Quash, Fix or Modify Conditions of A Child Support Subpoena.Fill out a child support modification petition. 2. File the petition with the Family Court that most recently established your order. 3. Use this program to ask (or "petition") the Family Court to change a support order if there is a "change in circumstances." Forms: Probation Forms, Presentence Investigation Forms, Child Support, Visitation, Custody and Paternity Petition Forms, Sign up for Notifications. Step 1: Fill out the forms: If you have an existing case, no matter how old, use the same case title and case number. In this video you learn how to request a change to your child support order and what forms you will need. No information is available for this page.