When you add a player the system will search our database for any other player with a similar name and the exact date of birth. If the system finds a match that match will be displayed for you. If the match that displays is in fact the player you want to add to your team click the Select button. This will then remove that player from their old team and add them to your team.
If that match is NOT your player then there is a button on the bottom that you can select to create the new player account.