Zoom prompts attendees to turn their video on before joining my personal meeting room

Whenever someone joins my personal meeting room, a pop-up video preview dialog always appears that prompts attendees to turn on their video. I do not want this to be enabled and can't figure out how it was activated or how to deactivate it.

It's an annoying extra step that someone must go through before they join my meetings.

Anyone know the right setting that will allow attendees to join the room with whatever their default setting is (camera on or camera off)?