Notwithstanding any other provision of this chapter, the bylaws may provide that the territory in which a cooperative supplies electric energy to its members shall be divided into two or more voting districts and that, in respect of each such voting district, a designated number of trustees shall be elected by the members residing therein, or a designated number of delegates shall be elected by such members, or both such trustees and delegates shall be elected by such members. In any case, the bylaws shall prescribe the manner in which such voting districts and the members thereof and the delegates and trustees, if any, elected therefrom shall function, and the powers of the delegates, which may include the power to elect trustees. No member at any voting district meeting and no delegate at any meeting shall vote by proxy or by mail. A quorum of three percent of all members present in person shall constitute a quorum for the election of trustees at a district or area meeting of members or for the transaction of other business at an area meeting, unless the bylaws prescribe a greater quorum requirement. In actions required to be approved by the cooperative's members, votes cast at all area meetings shall be aggregated and the failure of an area to have a quorum present or an adverse vote at some area meetings shall not defeat the action if, after aggregating votes at all area meetings, the proposal received a sufficient vote on an aggregate basis. No vote of the members on any matter required to be voted on by Section 37-6-9(b) at a central annual or special meeting shall be taken at an area meeting.