s 3A
(1) The President of Pensions Appeal Tribunals for Scotland or Northern Ireland may give directions as to— (a) the number of members of the Tribunal who should hear an appeal in Scotland or Northern Ireland ; (b) the extent to which the members hearing such an appeal must include— (i) medically qualified persons; and (ii) persons who are neither legally qualified nor medically qualified; (c) the extent to which in the case of such an appeal the members hearing it must include persons satisfying other requirements specified by the President; (d) the manner of determining the members who are to serve as the chairman and members of the Tribunal for the hearing of such an appeal.