Vendor registration is free. Online Vendor Registration​​ In order to enter into a contract with Miami-Dade County a firm must be fully registered.Form 3921 must be submitted along with the 3 supporting documents described in part 1 of this presentation as a single application package. Miami-Dade Vendor Affidavits Form; Authorization Agreement for Direct Deposit (MUST SUBMIT ORIGINAL DOCUMENT); Owner Consent (if applicable). Click on Register For Free in the blue box to get started: 2. Fill in the required fields to Create Account. 3. In the event of litigation, venue for any claim shall lie exclusively in a court of competent jurisdiction in Miami-Dade County. The School Board of Miami-Dade County, Florida, delineates the policy regarding lobbyists. Please visit our office or contact us at 305-375-1490 for assistance in completing this form. Miami Dade County Homeless Trust.