When a review is requested, it may take up to six months to complete the process. STEP 1: Complete the Complaint for Modification of Child Support.Fill in your full name as the Plaintiff and the Defendant's full name. Use this form to ask the Division of Child Support Services (DCSS) to review your case for possible modification (change). __(c) The Respondent is not a resident of Georgia, but this Court has exclusive, continuing jurisdiction to modify custody because a Georgia court has made a. Fill out the Petition for Modification of Child Support. â–¡ STEP 2: Fill out the Verification form to go with the Petition. HERE ARE THE DETAILED INSTRUCTIONS ON HOW TO FILL OUT THE FORMS: STEP 1- Complete the Petition for Change of Custody and Child Support. You can file a single action for contempt and modification of support against a Gwinnett County resident. The forms can be downloaded here.