In active speaker view

The main speakers are displayed at maximum.

In the gallery view

Each participant will divide the screen equally.

PC is

49 splits (split screens can be scrolled if more users are connected)

In the case of a smartphone

4 division

Related article
Show participants in gallery view
When sharing the screen in full screen
About the functional difference between the free version and the paid version
How to enable co-hosts and make participants co-host
Start the webinar (from preparation to the day)