Step 2 of the Donation Website Wizard is Payment.
Choose whether you would like to absorb the processing fee, pass it on to donors, or split it. Then select a Payment Account. It must be a 501(c)3 account. If you haven't set one up yet, you can follow the click here link to create one.
The Vantiv Dynamic Descriptor fields allow you to customize the way donations appear on a credit card statement. The text you enter in the box is the text that shows up next to a donation on a credit card or bank statement.