Sec. 9. (a) If a child has admitted the allegations of a petition, the juvenile court may hold the dispositional hearing immediately after the initial hearing.
(b) If a child denies the allegations, the juvenile court may hold the factfinding hearing immediately after the initial hearing.
(c) Except as provided in section 10 of this chapter:
(1) the child;
(2) the child's:
(A) counsel;
(B) guardian ad litem;
(C) parent;
(D) guardian; or
(E) custodian; and
(3) the person representing the interests of the state;
must consent to the timing of the hearing.