It is now possible to use folders on Apple TV. Follow these steps to get your Apple TV set up and ready for the new feature. See the video for a full demonstration.
Update your Apple TV
Turn on Dictation
Go to settings and scroll down. There will now be a dictation catagory called dictation where you turn it on
Next select an app
Move it on top of another app that you want to group it.
To change the folder name swipe up and press the siri mic button and tell it what you want it to be called.