On creation

Some key properties of your rooms should be set when the room is created using the API.
The room’s initial lock state, the pattern of the room name used in the URL and the room size (maximum number of participants) can all be determined at the time of creation.
Have a look at our API reference for a complete overview of properties that can be set on room creation.
Further customizations can be done after the room has been created, either by using URL parameters when embedding the room, or by customizing branding elements like background and logo.