A majority of the organizing members named in the articles, at a time and place agreed upon in writing by all of the said organizers or when and where all are present or upon call of a majority of such organizers and upon five (5) days’ notice thereof in writing giving the time, place and purposes of the meeting by United States mail or delivery by hand to all of the others of said organizing members, may make permanent organization of such corporation and adopt bylaws for the same and elect the members of the board of directors and such officers as under the bylaws may be elected by the members. The bylaws so adopted may be amended by the vote of a majority of the members present at any membership meeting duly called and held; provided, however, notice of such meeting and a statement of the substance of the proposed bylaw amendment shall be mailed or delivered by hand to all members of the incorporated association at least fifteen (15) days prior to the date of such meeting.