Motion to Modify Child Support Forms. These forms are designed for people who agree on the terms of their child support case.Step Two: Fill out the form. If you're eligible, fill out the JFS 01849, "Request for an Administrative Review of the Child Support Order. This page provides information for modifying the custody arrangement between parents. This form should be used when you are asking the court to change a current court-ordered child support obligation. Use these forms to file for a modification to a child support order in Ohio. You can only use these forms if you have an existing child support order. You should be able to file online through Pennsylvania Child Support Enforcement System (PACSES) website. Call the agency at 614-525-3275 to request an application be sent to you.