Using your Keyboard with CORE on Apple TV

When Navigating through CORE app

• Arrow keys: Use them to navigate up, down, left and right
• Return: Use the Return key to make a selection.

When opening Playback

• Arrow keys: Use them to navigate up, down, left and right.
• Return: Use the Return key to make a selection.

In addition for playback function keys may work as well 

• F7, F9: Rewind and fast-forward.
• F8, Spacebar: Play or pause content.
• F4: This will return you to the Home screen. (On the third-generation Apple TV, you’ll use the Escape key, instead.)
• F11, F12: Decrease or increase volume.
• F3: Open the app switcher.