Diese Frage wartet auf Beantwortung

Where to enter second passenger information for German Rail Twin Pass promotion?

I am planning to buy a German rail twin pass for 15 consecutive days (for foreign travelers) using the summer promotional price from the online DB website. However, I could not find an area where I could enter in the passport number for the primary passenger during the checkout process. There were only places for the first traveler's personal information, as well as the name and passport number for the fellow traveler. I looked online and found that it is necessary to have these information present on the ticket and would like some help doing so. Thank you!