Video calls are widely used for various types of meetings, but some meetings require specific user needs like presentations or live streams where the focus is on the presenter rather than all participants. Daily.co API allows users to customize video calls by preconfiguring a meeting link and using properties such as start_video_off and start_audio_off to set audio and video off at the start of a call, toggle presenter mode with owner_only_broadcast property, or use Shh mode for basic video calls. Users can configure calls directly within Daily.co's developer docs pages, which provide simple steps to create a room object with audio and video set to off, allowing users to manually turn on their camera/mic at any time after joining the call. The API also allows developers to use local environments to create and configure rooms using code, and provides documentation and support for integrating video call presentations into products.