Custom Questions on Booking Page

In SETTINGS -> PROPERTIES -> BOOKING QUESTIONS you can set which information to request form your guest when they make the booking. There are standard options which can be set to "not used" (they will not appear on your booking page) "optional" (they will appear on the booking page) or "compulsory" (the guest needs to fill information in to complete the booking)

If you require other information e.g. arrival time you can do this adding a custom question.