Click on the car of the person you want to add as your friend. Wait for the menu, then click "Add Friend." A friend request will go to that person. If they accept, you will be able to see where they are at all times. In order to do this, press F1. There, you can request to join a party with them, delete them from the list or add their name into the chat box, so that you can whisper them. Hope this works!
Chat with our AI personalities
As of 19.1.17, you can't add friends on Minecraft.
Raycity sea
You can add another player to your friends by clicking Add a friend and typing in the person's username.
I don't think you can but you can get your friends to add you
First, you have to sign in then you go to friends then go up to add a friend and put there account.