Transfer more than 1 character

I would like to transfer 3 characters from one server to another in a single payment. On the "Select Characters" page it says:

Q u o t e:
The table below displays your characters on the realm you selected. Click the "Move Character" button next to the character(s) you would like to move. Once you are satisfied with your choices, click the "Continue" button at the bottom of the page to proceed to the next step.

But it doesn't allow me to select more than 1 character.

1. There is no "Continue" button
2. When I click "Move Character" next to one of my characters, it directly goes to the confirmation and payment pages.

How do I select more than 1 character?