900. Representation in proceedings.

Where, in the course of any proceedings1, it appears to the court or tribunal that2:

  1.  

    (1)     the proceedings relate to a tenancy3 or licence vested4 in a serviceman5;

  2.  

    (2)     a person other than the serviceman desires to take a step in the proceedings on behalf of the serviceman at a time when he is serving abroad6, or has purported to take a step in the proceedings on his behalf at a time when he was so serving7; and

  3.  

    (3)     that person, in seeking or purporting to take that step, is or was acting in good faith in the interests