O.C.G.A. § 14-2-1022: Bylaw increasing quorum or voting requirement for directors.

(a) Unless provided otherwise in the articles of incorporation or the bylaws, a bylaw that fixes a greater quorum or voting requirement for the board of directors:

(1) May be adopted, amended, or repealed by the shareholders only by the affirmative vote of a majority of the votes entitled to be cast; or

(2) May be adopted, amended, or repealed by the directors only by a majority of the entire board of directors.

(b) A bylaw adopted or amended by the shareholders that fixes a greater quorum or voting requirement for the board of directors may provide that it may be amended or repealed only by a specified vote of either the shareholders or the board of directors.