While some of these only allow you to switch them off or on, others are a little more complex. However, none of them will be available (they will be greyed out) until you set Restrictions to on, when you’ll be asked to create and then use a four-digit passcode. You can then select which of the options you wish to put in place.
#Tip: Don’t forget the passcode, because in order to use your system you will need to reset or restore the Apple TV in Settings>System, and you’ll be required to set your whole system up all over again
For a more granular approach, navigate to Settings>AirPlay>Security, where you can set AirPlay to demand a Passcode or Onscreen code. With this in play anyone attempting to stream to your Apple TV with AirPlay will need to enter a passcode shown our TV. You can also set Password access, which means anyone attempting to stream content to your TV will need to use your password. Take care to change your password regularly if that is the option you choose, as once someone enters your password on their device, that device remembers the password forever.