There can be two or more registrants. Both registrants must sign form (Vehicle Registration / Title Application) and provide their proofs of identity and date of birth. Both names must appear on the Insurance ID Card. If there are more than two registrants, you must complete form (statement of Partnership or Joint Ownership). You cannot add a name to a current registration. You must apply for a new registration and new vehicle plates in the two names. You cannot transfer the vehicle plates or documents that are assigned to one registrant to a vehicle that you will register with two names.