Indiana Code Title 23. Business and Other Associations § 23-17-12-12

Sec. 12. (a) A designated director may be removed by an amendment to articles of incorporation or bylaws deleting or changing the designation.

(b) Except as provided in articles of incorporation or bylaws, an appointed director may be removed with or without cause by the person appointing the director.  The person removing the director must do so by giving written notice of the removal to the following:

A removal is effective when the notice is effective under this article unless the notice specifies a future effective date.