5U.K.The assessors shall give their opinions to the president on all matters of a technical nature and shall take such further part in the proceedings of the tribunal as he may direct, but the decision of the president or, in a case where additional members have been appointed, the decision of all, or, in the event of a difference of opinion, of the majority of, the members of the tribunal other than the assessors, shall, on all questions, be the decision of the tribunal.