The public defender shall render legal aid and defend only those indigent defendants who are in jail, charged with the commission of a crime and are unable to make bond, or such other defendants as a court with criminal jurisdiction shall determine to be indigent. In addition, the public defender shall provide guardian ad litem services when such services are deemed required by the Davidson County juvenile court for children who are the subject of proceedings in such court and the metropolitan government would be required by law to pay reasonable compensation for such services if not provided by the public defender. Metropolitan Code and Charter. Section 2.16.010(A)