Why the fold has to do all this work
Nobody scrolls before they decide. A visitor from your email gives the top of the page a look that lasts three seconds: is this the thing that was promised, who is running it, when, and whether a seat is still there. The register action appears when those four settle favourably, which is why pages that lead with a twenty-paragraph biography convert worse than pages that lead with a chapter list and a time.
The parts are all real fields on the product's page: the webinar-or-workshop label, the start time with the zone you picked beside it, the agenda built as chapters each with a duration and takeaways, the speaker card with name, title, photo and biography, the seat count the page holds, and the form. Copying these shapes is not inventing layout; it is deciding what goes into fields that already exist.