Do guests see the agenda before they register?
Yes, and that is the point of the block. The chapters sit on the registration page with their durations and takeaways, so the decision about whether the hour is worth their evening is made with the plan in front of them rather than after it.
How many chapters should a webinar agenda have?
Four is the shape most hour-long sessions take, with the last one held for discussion. Three reads thin for a promised hour; six stops being a plan and starts being a list, which is the opposite of what a scanning reader is looking for.
Can I change the agenda after people have registered?
You can edit the page and the link stays the same, so the next person to open it reads the current version. Registrants are told the joining details by email; if a change is significant enough to matter to them, say so in the reminder you send rather than letting the page do the work.
Should the agenda name who speaks each chapter?
If two or more people present, yes — a chapter that says whose it is makes both biographies useful and stops the room wondering whether the handover was a mistake. With one speaker it is noise, and the speaker section already covers it.
Does the agenda appear in the confirmation email?
The confirmation is for the time and the way in, and it carries a calendar file with it. Put the agenda on the page, where people weigh it before registering, and send them back to the link in your reminders if the running order is the reason they came.