Thard_Verad answered: If you're in the same room, you can do it the other way around: Trade and battle first, then register as friends directly from the game. To add friends from a distance, you'll need to do it from the 3DS menu.At the top, tap the Friends icon. (Orange smiley-face square) There should be a button to add friends. Enter his FC on your system, and he enters your code on his.hard_Verad answered: If you're in the same room, you can do it the other way around: Trade and battle first, then register as friends directly from the game. To add friends from a distance, you'll need to do it from the 3DS menu. At the top, tap the Friends icon.