File a motion with Hennepin County District Court. You may file a motion to modify your support order.Child Support ezDocs is an interactive, online tool parents can use to complete pro se forms to ask the court to change a child support order. If you need to modify your divorce decree or current spousal maintenance, child custody or child support order, we are here for you. To modify child custody, parenting time, child support, or spousal support, a motion is filed with the court. The Hennepin County Family Court SelfHelp Center offers help on divorce, custody, child support, and other family law cases. Are you looking to modify your divorce agreement? Our Minneapolis post-divorce modification lawyers can help you file a motion. At the law office of divorce attorney Linda K. Wray, we help clients get through the process of renegotiating or relitigating their divorce decree. Initiation of the process: The first step in seeking a post-divorce modification is filing a petition with the court.