Mo. Rev. Stat. § 355.376: Regular and special meetings.

1. If the time and place of a directors' meeting are fixed by the bylaws, or the board meets at regular intervals, the meetings are regular meetings. All other meetings are special meetings.

2. A board of directors may hold regular or special meetings in or out of this state.

3. Unless the articles or bylaws provide otherwise, a board may permit any or all directors to participate in a regular or special meeting by, or conduct the meeting through the use of, any means of communication by which all directors participating may simultaneously hear each other during the meeting. A director participating in a meeting by this means is deemed to be present in person at the meeting.