(a) In any proceeding for terminating parental rights or any rehearing or appeal thereon, the court shall appoint an attorney to represent the child as the child's counsel and may appoint a separate guardian ad litem or a guardian ad litem who may be the same person as the child's counsel.

(b) If the parent or parents of the child desire to be represented by counsel but are indigent, the court shall appoint an attorney for such parent or parents, which shall be a charge upon the funds of the county upon certification thereof by the court in the same manner as authorized for other expenses under Code Section 15-11-8.