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