Webinar with attendees videos or avatars shown

Hello,

We would love to run our webinars while showing a screen with attendees. Zoom allows either 24 or 49 live videos on a screen in the meeting, but I don't see this setting for a webinar. Would be great to show at least a sliver of an audience to demonstrate the audience.

Some well-known presenters (ex: Tim Robbins) do this in their Zoom webinar presentations. What are the settings required for this?