Idaho Code § 33-2606

The board of trustees shall meet at least once in each quarter unless required by city ordinance to meet more frequently. One (1) of the meetings shall be designated as the annual meeting. The purposes of the annual meeting are to elect the officers of the board, to establish a regular meeting date, and to review, amend, repeal or adopt bylaws, policies and procedures. Special meetings may be held from time to time as the board may determine, but written notice thereof shall be given to the members at least two (2) days prior to the day of the meeting. A quorum shall consist of three (3) voting members, but a smaller number may adjourn. All library board meetings are to be held pursuant to the open meeting law, chapter 2, title 74, Idaho Code.