The concept of "available/selected/switched-on" state transitions is crucial in video communications applications, where participants can be in different states (e.g., available, selected, switched on) and switching between them requires careful consideration. The terminology used in traditional media productions can be applied to WebRTC sessions, but the timing difference between selection and switching activities is essential. Daily's API provides tools for selecting and switching participants, including properties like `videoSettings.preferredParticipantIds` and `videoSettings.omitPaused`. By using these properties, developers can control which participants are shown in a server-rendered stream. Additionally, VCS cloud function overrides can be used to push application-specific logic to Daily's rendering cloud, simplifying client application design and reducing API calls. The concept of "host" and "guest" roles can be applied to WebRTC sessions, allowing for more flexible and customized video communications applications.