How do I write an agenda

An agenda sets what will be discussed in the meeting/seminar/presentation. To prepare an agenda, make a preliminary list of the topics to be presented and decide how much time will be devoted to each topic, usually based on the total time of the whole meeting. For example, to list "Introductions" Time allotment no more than 10 minutes. Come up with a name for the meeting/seminar/presentation. Often you need to check with various presenters
(if needed) to determine how much time they need. The format can vary, of course. Here's a general one. The title, date and place should be centered on the page, and the time entries left-justified.

Be mindful of the time. So many unfinished meetings are due to someone running over time and never getting to the end of the agenda. So then another meeting is scheduled and so on ad nauseam. A good meeting has succint points, focused discussions, and a moderator to keep people on track. Don't ever let a meeting go to places you never thought possible. It is nigh to impossible to corral people back into the main focus.

For some writing tips see:

Notice of Meetings & Agendas

Have fun. Thank heavens I do not have to write them anymore.