(6) At any time when, by virtue of section 34(3), the Speaker is unable to perform the functions of his or her office, those functions shall, until he or she vacates his or her seat in the House or resumes the performance of the functions of his or her office, be performed by the Deputy Speaker or, if the office of Deputy Speaker is vacant or the Deputy Speaker is required to cease to perform his or her functions as a member of the House by virtue of that subsection, by such member of the House (not being a member of the Cabinet or a Parliamentary Secretary) as the House may elect for the purpose.