What should I include in a motion or response? In order to complete this form, you will need a copy of your existing child support order.If you do not have a copy, ask the Clerk of Court how to get one. If you have been served with divorce, custody, visitation or child support papers, you must file an answer if you want to participate in the case. To file your request, review the instructions worksheet, then complete the Motion to Modify Child Support and the necessary Financial Statement. To file a motion, follow the standard filing procedure. You may file a multi-part motion, such as a motion to dismiss and a motion for summary judgment. This factsheet explains child support, how to obtain an order, and how to modify an existing order in the State of Maryland. Payments, in the form of check or money order, should be mailed to the Maryland Child Support Account, P.O. Box 17396, Baltimore, Maryland 21297-1396. I was wondering would be quicker to file a motion on my own at the court house or to fill out the modification form child support will send in the mail.