District of Columbia Code Division V. Local Business Affairs § 29-1008.14. Waiver of notice of meeting.

(1) Objects to the meeting at the beginning of the meeting or promptly upon the director's arrival at the meeting and does not thereafter vote in favor of or otherwise assent to the action taken at the meeting; or

(2) Promptly objects upon the introduction of any matter for which notice under § 29-1008.13 has not been given and does not thereafter vote in favor of or otherwise assent to the action taken on the matter.