• A single transfer is a one to one transfer from your original World to a single destination World.
• If it's a single destination, you can transfer up to eight characters at once.
• In the event you would like to move character #1 to World A, and character #2 to World B or C, you will have to perform two world transfers.
• In order to transfer, the below requirements need to be fulfilled:

      → You cannot belong to a Free Company (If you do belong to one, please leave the Free Company).
      → Make sure the character you wish to transfer is logged out.
      → Make sure there are no items being sold on the market boards.
      → There will be a limitation on the maximum amount of gil you can bring into the destination World.

Source: mmosite