Parents also have the option of requesting a modification directly from the court. No information is available for this page.To begin the process, ask our office to review your case for modification. This guide is designed to help you fill out the forms yourself. It is not intended to provide legal advice nor strategy as to how to complete the case. Check custody and child support on the form FL300. Check modification on the form FL-300. You may submit a request online. You file a Request for Order (FL300) for Modification of Child Support in the court and case in which child support was ordered. Apply to increase or decrease your child support order.