The WebReserv booking system has many great features. One of the features is the ability to add prices and/or time to custom fields. This feature allows you to add options to reservations and during the booking process, your customer can select which option they want.
The screen shot below shows a “lunch option” that can be used for tours and rentals.
The custom field list can also include additional time that should be added to the reservation. This feature should only be used for hourly reservations. To specify additional time, enter it as [xdyhzm] where x = days, y=hours and z=minutes. So if you want the length of the reservation to increase by 20 minutes, enter [0d0h30m].