A virtual stream can be used if the video has not yet been produced or if you have placed the location of the stream of the invited speaker.
For virtual streams, click the + button in the stream area and click the virtual stream to create an editable virtual stream.
Click the setting (gear icon) of the virtual stream to change the virtual stream to the sample photo by clicking the change sample photo function.
You can designate a sample photo and design the desired virtual stream in advance.
Try placing a virtual stream into your scene.
By designating the stream area in advance, you can place it quickly when entering the actual stream later.
Try putting a real stream into a virtual stream placed in the scene.
A real stream is automatically registered in the stream area designated as a virtual stream.