Florida Juvenile Procedure Rule 8.610
(a) Definitions. For the purposes of these rules the terms
“party” and “parties” shall include the petitioner, the child, the
parent, the guardian ad litem where appointed, the custodian, and
every person upon whom service of summons is required by law.
(b) Other Parties. The state attorney’s office, the
Department of Children and Family Services, or the Department of
Juvenile Justice may become a party upon notice to all other
parties and the court. The court may add additional parties.