Here's how you can add friends by accepting any friend requests that others might have sent to you: 1. Navigate your profile page on the Switch Home screen. 2. Select Add Friend. 3. Choose the Received Friend Requests option. 4. Select the friend request you want to add. 5. Continue by clicking on the Become Friends and hit OK on the next prompt. Once completed, you’ll be able to see when your friend is online, and then you can play together.