The Dean of the Arches and Auditor may, with the consent of the Archbishops of Canterbury and York, appoint a fit and proper person to act as deputy Dean of the Arches and Auditor for such period not exceeding 12 months, or for such purpose, as is specified in the instrument of appointment.

Where the Dean of the Arches and Auditor is for any reason unable to act or the office of the Dean is vacant, the Archbishops of Canterbury and York acting jointly may in writing appoint a fit and proper person to act as deputy Dean of the Arches and Auditor during the period of inability or the vacancy.

A person appointed as deputy under this section has the same powers and duties as the Dean of the Arches and Auditor; but in the case of an appointment under subsection (1) for a specified purpose, the reference to having those powers and duties is a reference to having them for that purpose only.

The qualifications for an appointment under this section are the same as those for the appointment of the Dean of the Arches and Auditor under section 10; accordingly, subsections (4) and (5) of that section apply to an appointment under this section as they apply to an appointment under that section.