(1) An application for a variation of an undertaking or of any conditions of an undertaking or for the revocation of an undertaking may be made to the Court by—
(a) the child; or
(c) the person with whom the child is living.
(2) On an application under sub-section (1) the Court may—
(a) if the application is for a variation of an undertaking or of any conditions of an undertaking, vary the undertaking or any of the conditions of the undertaking or add or substitute a condition but must not extend the period of the undertaking; or
(b) if the application is for the revocation of an undertaking, revoke the undertaking.