Del. Code tit. 3, § 8509

Within 30 days after the recording of the articles of association in the office of the recorder of deeds, as prescribed in § 8504 of this chapter, a call, signed by not less than a majority of the directors, shall be issued for a meeting of the common stockholders. At such meeting, or any adjourned session or sessions thereof, bylaws regulating the conduct and management of the association shall be adopted.