If you need assistance in completing forms to establish parentage, obtain child support, collect child support arrears or modify existing child support orders, Parents tell the court about their agreement to make an initial (the first) order for child support or modify (change) existing orders.Filing papers to modify child support, set payment on arrears and release your license if you have a case with the Department of Child Support Services. With this service you will be able to submit completed forms electronically to the Contra Costa County Department of Child Support Services. If you are asking for child support or a change to your child support order, fill out the Summary Form for Financial Information. Restrictive Covenant Modification Form(PDF document)(Opens in a new window) Contact Us Registrar of Voters TTY:Call 711 Use the Interim Change Form available on our website or at the HCV office, to report all changes. Step 1: Fill out the forms: If you have an existing case, no matter how old, use the same case title and case number. The deadline to complete the form is Thursday, October 31st. If you do not want to file for divorce or legal separation, you may file a Petition for Custody and Support of Minor Children.