There is a free online child support calculator that figures out how much support a parent needs to pay. Your court's Self-Help Center can help you with earnings assignments or income withholding orders.There are a couple of ways that Riverside child support can be paid, but the most common way is known as a wage assignment. If a child support order is not already in place, you must complete an Application for California Child Support Services. The following forms can be printed and submitted to your county DRS. Read the descriptions to determine which forms are appropriate for your needs. If you've gotten remarried or had another child after a divorce, this can affect alimony or child support. Family Law Facilitator. If you are requesting child support during a divorce, Riverside county will require specific forms to be filled out. Permanent support: Alimony payments made after a divorce or legal separation is finalized.