The election of the elected members of the Board shall take place every three years in the same year as, but after, the election of members of the diocesan synod, except that where the diocesan synod determines that sub-paragraph (c) of paragraph 2 above is to apply to the Board the election of the elected members shall take place in the same year as, but after, the election of the deanery synods; and the elected members shall be elected in such manner as may be determined by the synod by which they are elected and shall begin to hold office on the 1st January next following their election.