To add a walk-in guest, tap the green “walk-in” button. The registration form that you previously formatted on the web platform will slide over (see instructions here).
When you are finished, tap the arrow at the top right corner of the page. After the attendee is added, tap close to see their contact card. Select "Check-In" to check in the attendee and print their badge (should you have auto-print on).
Don’t know how to add a walk-in registration type? To learn how to add/create registration types and customize registration forms, see the web panel Registration section.