You may fill them out at home or at the courthouse. Please read the forms carefully as some have a "Verification" page.Forms; Motion And Notice Of Hearing For Modification Of Child Support Order. By North Carolina Judicial Branch. 1. Fill out a child support modification petition. 2. File the petition with the Family Court that most recently established your order. 3. You would file the Motion to Modify with the Clerk of Court in Wake County and send a copy of the same to your ex (or her attorney). Qualified Medical Child Support Order. The application fee must be a certified check or money order made payable to the specific county that you are requesting to handle your support case (e.g. You would need to file a Voluntary Dismissal of your claim.