(1) Where the Chairperson of the Board is or is expected to be absent from duty or from the Territory, the Minister may appoint a member of the Board to act as the Chairperson during the absence.
(2) The validity of a decision of the Board shall not be questioned in any proceedings on a ground arising from the fact that the occasion for the appointment of a member purporting to be appointed under subsection (1) had not arisen or that an appointment under subsection (1) had ceased to have effect.