6. Where a counter-notice under subsection (1) of section 24 of the 1948 Act has been served—
(a)in a case where a notice to quit has been given to a service man as mentioned in subsection (1) of section 21 of the 1951 Act, or
(b)in a case where subsection (5) of the said section 21 applies in relation to a service man,
and it appears to the chairman that—
(i)it is necessary for any act or proceedings consequential upon the service of the counter-notice to be performed or conducted by the service man;
(ii)the service man is serving abroad, and
(iii)no person has been duly authorised to perform the act or conduct the proceedings on the service man's behalf,
the chairman may, whether on an application by any person or otherwise, direct that some fit person who is willing to perform the act or conduct the proceedings shall be deemed to be authorised for that purpose and to take all such steps as may be necessary or incidental thereto.