The feature is enabled by default so players shouldn't have to do anything in order to use it. You have to go to the lobby screen to see it. In the bottom-right corner of the screen you can find your friends list icon. Then, use the designated button to add a friend. Oct 6, 2020 is when it will happen.
Haphazardly Gaming Domain
Join
Now
gaming.haphazardly@gmail.com