29. In this Part –
“approved duty” means attendance at a meeting of the Committee or of any sub-committee thereof or the doing of anything approved by the Committee for the purpose of, or in connection with, the discharge of the functions of the Committee; and
“attendance allowance” means a payment in respect of any loss of earnings necessarily suffered or any additional expenses (other than expenses on account of travelling or subsistence) necessarily suffered or incurred by a member for the purpose of enabling him to perform any approved duty.