The hearings shall be conducted by the Zoning Hearing Board, or the Zoning Hearing Board may appoint any member as a hearing officer. The decision or, where no decision is called for, the findings, shall be made by the full Zoning Hearing Board; however, the appellant or the applicant, as the case may be, in addition to the Township, may, prior, to the decision of the hearing, waive decision or findings by the full Zoning Hearing Board and accept the decision or findings of the hearing officer as final.