📄️ What is CamIn?📄️ System Requirements📄️ How to record a presentation video?📄️ How to Use a Virtual Camera on Video Conferences?📄️ How to set touch up and virtual background?📄️ How to set a video as virtual background?📄️ How to use CamIn Virtual Camera in ClassIn?📄️ How to use CamIn Virtual Camera in zoom?