If you want child support services, please complete the online sign up form. If mailing in your payment, make sure you write your full name clearly and include the complete court case number or child support case number.Forms are available in Room 137 of the Miami-Dade County Courthouse and at the district court locations. The service process includes providing the parent who owes support with copies of the documents you have signed. SOFIA (State Of Florida Interactive Access) was created to allow you to electronically complete court documents using easy to follow interviews. To schedule a consultation to discuss whether your case is eligible for modification, contact us at or fill out an online contact form. We will protect the best interests of you and your loved ones. Call our team at or fill out the form below. Lastly, the parent must show that the modification of the parenting plan will be in the best interest of the child. The primary figure used to calculate support is the income of both parents.