Indiana Code Title 27. Insurance § 27-1-6-19

Sec. 19. (a) If the articles of incorporation provide for the adoption of the bylaws by the shareholders, members, or policyholders, the incorporators or a majority of them after the issuance of the certificate of authority, shall call a meeting of the shareholders, members, or policyholders for the purpose of adopting the bylaws, giving at least ten (10) days' notice by mail to each shareholder, member, or policyholder entitled to vote at the time and place of such meeting, unless the giving of such notice be waived in writing by any or all of such shareholders, members, or policyholders, in which case notice shall be given only to such shareholders, members, or policyholders who have not so waived such notice.  Such shareholders, members, or policyholders shall meet at the time and place designated and shall adopt the bylaws.  After the adoption of such bylaws, the directors named in the articles of incorporation as the first board of directors shall meet at the call of a majority thereof and shall elect officers and transact such other business as may properly come before such board.

(b) If the articles of incorporation do not provide for the adoption of the bylaws by the shareholders, members, or policyholders, then, after the issuance of the certificate of authority, the directors named in the articles as the first board of directors shall meet at the call of a majority thereof, adopt the bylaws, elect officers, and transact such other business as may properly come before such board.