Secretary should be very clear about the purpose of the meeting and what all are to be discussed in the meeting. The secretary's role starts a few days before the meeting, depending upon the bylaws of the organiziation. It may be required to give notice of the meeting before a minimum period of time; for e.g, a general body may require one month notice, a director board 1-2 weeks, a committee meeting 2 days to 1 week and an emergency meeting 24 hours to 48 hours and so on...