Extension of time
17.—(1) A chairman may, on the application of a party or of his own motion, extend the time for doing any act appointed by or under these Rules (including this rule) and may do so whether or not the time so appointed has expired.
(2) An application under paragraph (1) shall be made by presenting to the Secretary a notice of application, which shall state the title of the proceedings and shall set out the grounds of the application.
(3) The Secretary shall give notice to each of the parties of any extension of time granted under this rule.