Elected or appointed Township officers, employees, and delegates, including members of the Board of Supervisors, shall be paid by the Township the actual expenses incurred, or in place of transportation expenses, mileage at a rate to be established by the Board of Supervisors, from time to time, when authorized by the Board of Supervisors to attend meetings, conferences, institutes and schools in order to discuss and resolve the various questions arising in the discharge of the duties and functions of the respective officers, employees, and delegates and to provide uniform, efficient, and economical methods of administering their Township duties.