(1) If an application has not been served, a registrar, at the request of the party who filed it, may amend the application on or before the day for hearing named in the application to name another day.
(2) The application may be amended—
(a) by a magistrate; or
(b) by a judicial registrar; or
(c) by a registrar.
(3) An application must not be amended under this Rule more than once.