Xbox One users can add friends by using the Xbox Live service. To add a friend on Xbox One, users must first sign in to Xbox Live and then click on the three lines in the top left corner of the screen. On the right side of the screen, users will see a list of friends that they are currently connected to. Users can click on any of these friends to add them as a friend. To add a friend on Xbox One from PS4, users must first sign in to PlayStation Network and then click on the three lines in the top left corner of the screen. On the right side of the screen, users will see a list of friends that they are currently connected to. Users can click on any of these friends to add them as a friend.