Meetings must: Be noticed in advance;. Include only business described in the agenda;.The notice must specify the time and place of the special meeting and the business to be transacted. In essence, an agenda would be prepared. The notice of meeting must state the place, date and time of the meeting, as well as the "general nature of the business to be transacted" at the meeting. Regular meeting agendas must be posted 72 hours prior to their start time and Special Meeting agendas posted 24 hours prior. 72 hours in advance of the meeting (24-hrs for special meeting). â—‹ Weekend hours count toward the notice requirements. The Brown Act requires that Special Meeting agendas be posted 24 hours in advance. The articles or bylaws may not dispense with notice of a special meeting.