To use the described feature on an iPadOS or macOS device, first extend the shelf on the left side of the screen. On an iPhone, the shelf extends from the bottom instead. Here are the steps to follow:
Accessing the Video Item: Tap on the video item located in the shelf. This will cause the item to animate and move to the center of the canvas.
Add a Video: After the blank photo item is added to the canvas, a dialog is raised offering three choices to add a photo using the photo library, the files app or taking a video with the camera.
Start the Video: A play button is in lower right corner to start the video.
View Video: Double tap the video to bring up a fullscreen quicklook window. Users may play and share the video if desired.
Adjusting Video Quality: There's also a setting in the board's settings to change the quality of the video. Note: The higher the quality the larger your file size will grow.
Creating Similar Items: To quickly create an item similar to one you've just made, use the keyboard shortcut ⇧⌘N.
Connecting Items: To connect items, long-press on an item until it glows. Then, drag a string/connector to another item. Alternatively, select two items and connect them using the pin button in the navigation bar. There's also a setting in the board's settings to choose the type of connections.
Drag and Drop/Pasting Videos: Users can add videos by dragging and dropping or pasting them. Learn about this for iPadOS from Apple Support.