Umm honestly im not too sure about that one ... U can log back into your account and see if you can go back into your documents and change it but if it's alread...

Have u completely filed ? If u havent then that option should be towards the end .. if u have then u probably mistakenly requested mail .

After you complete all your steps and your ready to turn in your filed work it will give you an option to direct deposit or receive a mailed check