Direct Deposit of Refund

I cannot figure out how to enter my Routing and Bank Account number for the IRS to Direct Deposit. I have got to the page where Turbo asks if I want to e-File, but I don't want to hit that and find I've e-Filed without entering the information. The instructions in Turbo are very inadequate. Can anyone tell me how I get the data in BEFORE I tell it to e-File?