To pay for another person, you will need to first enter him/her in the lottery unless he/she has already done that. Please create an account for that person. (This means that you will need their e-mail and password.) If he/she is selected in the lottery, follow the links to pay, and put in your credit card information under their account.
Do NOT try to buy multiple tickets under one account (for example: I will just buy 6 tickets under my name for my group). The tickets need to be purchased one at a time under each attendee's account.