How do I stream this event from an Apple Device to Apple TV

Do one of the following:

• Mirror the screen of an iOS or iPadOS device on Apple TV: On the iOS or iPadOS device, swipe to open Control Center, tap Screen Mirroring , then select Apple TV in the list of AirPlay devices.To end mirroring, make sure Control Center is open on your device, tap , then tap Stop Mirroring.
• Stream video from an iOS or iPadOS device to Apple TV: Start playing video on the iOS or iPadOS device, tap  in the video window, then select Apple TV in the list of AirPlay devices.To stop streaming, tap  at the top of the screen, then select Play on [iOS or iPadOS device].

  Note: If you have an Apple TV 4K and an iOS or iPadOS device that supports 4K HDR video, your videos from the Photos app will stream in full 4K HDR resolution.

For more information, please check out Apple.com support.