Here's what to expect when you request for a modification of your child support order. Click here to learn the steps in the modification journey.If you would like to change a child support or custody order that resulted from a SAPCR, you will need to file with the court for a modification. Order (Relief from Support Payments and Commitment). PDF. 4-16. Notice of Motion To Quash, Fix or Modify Conditions of A Child Support Subpoena. You may need to file a motion for a reduction in payments in the court where any prior child custody orders have been filed. All child support forms are categorized and linked below as downloadable files. Select the category you need to see the corresponding forms. To modify a child support order, one parent must prove a change in income. (Fill in the cause number and court information exactly as it is written on the order you want to change.) In the Interest of the following Minor Child(ren):.