The maximum number of attendees is 18 live, 14 remote. This is because of the highly interactive and practice centric instructional model (more students means less time practicing per student).
However, for larger groups a keynote talk teaching how to avoid the most common speaking mistakes, and core techniques, is something we are often asked to provide. This is a good option if the size of your group is fixed, but you want to improve everyone's public speaking aptitude.
All attendees are asked to come with approximately two minutes of material. This could be from a talk they have given before, or preferably, a new talk they want to work on. It's entirely fine for it to be rough and even improvised, as the goal for the day is to teach attendees how to develop material through practice.
The topic of the material can be anything: a story they want to tell, an idea they want to pitch, or a lesson they want to teach.
We watch at least the first 20 minutes of your presentation, which is almost always sufficient to generate a very useful and actionable report. We may watch move of your talk if needed, or if a top concern is structure and pacing.
Before your session is scheduled, you'll note any specific topics or skills you're interested in. During the session itself you'll be asked to practice doing a presentation and that will be the basis for how and what you're coached on.