Under the Procedure Rule 23 the parties to the appeal shall
not be entitled to produce any additional evidence either
oral or documentary before the Tribunal, but the Tribunal
may or reasons to be recorded allow such documents to be produced
or witnesses to be examined or affidavits to be filed or such
evidence to be adduced. The Tribunal may however require production
of any documents or examination of any witness or filing of
any affidavits if it is of the opinion that it is necessary
to enable it to pass orders or for any sufficient cause.
Where any direction has been made by the Tribunal the parties
shall comply with the directions of the Tribunal and after
such compliance send the documents the record of the deposition
of the witnesses or record of the evidence adduced as the
case may be, to the Tribunal.