Within twenty days after the appointment of the board of county park commissioners, and within twenty days after any change in its personnel, the board shall meet and shall organize by selecting one of its members as chairman. One-half or more of the members constitutes a quorum of the board. The board shall hold such meetings as may be required for the transaction of its business and activities. If the board decides to hold meetings at a time other than the time for regular meetings of the board of county commissioners, the board shall draft a schedule of regular meetings to be held throughout the year. The schedule must be filed with the county auditor and the meetings must be noticed in accordance with section 44-04-20. A special or emergency meeting may be called by the secretary upon the order of the chairman, or upon the request of the majority of the board with notice provided in accordance with section 44-04-20.