The Planning Board shall elect a chairman and vice chairman from the members of Class IV, and select a secretary, who may or may not be a member of the Planning Board or a municipal employee. It may employ, or contract for, and fix the compensation of legal counsel, other than the Township attorney, a planning consultant, a civil engineer, environmental planner, and other staff and services as it may deem necessary, not exceeding, exclusive of gifts or grants, the amount appropriated by the Township Committee for its use.