Complete one of the following application forms: Follow the instructions on the application and provide as much information and as many documents as possible. Child Support payments may be made online.The payment may be made after you register with the State of Arizona Payment Gateway. View forms and instructions to change child support or alimony or spousal maintenance in Maricopa County, Arizona. The Child Support Calculator is an interactive program that will calculate a child support amount based on the Arizona Child Support Guidelines. In Arizona, either spouse in a divorce can have their family law attorney request an order for spousal maintenance or spousal support. In Arizona, either spouse in a divorce can have their family law attorney request an order for spousal maintenance or spousal support. In Arizona, child support can be estimated using the Arizona Child Support guidelines. If the action involves a minor child, that child must have lived in Arizona for at least 6 months prior to filing. Arizona uses a formula to determine which parent pays support and how much.