Salaries of all Directors and other employees of the classified service of the Town shall be determined by the Board of Selectmen, in conformity with a systematic pay plan for the positions involved, upon recommendation of the Town Manager, providing nothing herein shall be construed to limit the power of the Board of Education to fix the compensation of employees of the school system. The Town Clerk shall receive a salary in lieu of all fees, and such salary shall be determined by the Board of Selectmen.