ADD your Guest to your registration before you advance to payment. This is done n the 2nd step page of registraiton.
STOP HERE - Select your name as the member to register - then go to NEXT.
Now if you scroll to the bottom view of the page you will see ADD GUEST.
Select the GUEST button - then NEXT., add additional guest by repeating this step "ADD GUEST"
Then you can go to NEXT and advance to PAY.
If you GUEST(S) do not show up on the payment page, GO BACK and add them before you pay.
Once you pay you CANNOT add a guest from your account.
Guest will have to go to the event on the web and register individually.