Call layout
You can switch between promoted view and grid view using the toggle in the bottom bar.
Grid view
Grid view shows as many participants as the screen can fit. Use the navigation buttons on the left and right to scroll through participants when there are more than the screen can display.
Promoted view
Promoted view shows the active speaker large, with other participants in a row below. Use the navigation buttons on the left and right to scroll through participants when the row overflows.