Hello.
1) Please note, for ability to make the booking for the times that going from one day to another, like from 8:00 am to 8:00 am or from 8:00 pm to 8:00 pm possible only in case, if you select 2 days in calendar. If you select only one day, then system will not allow to make this booking, because times in this date will be the same (e.g. 8:00 am = 8:00 am at the same date).
2) Such time slots you can configure at the Booking > Settings > Form page. You can check how to add and configure time-slots in the Booking Calendar Free version here https://youtu.be/-pOTMiyp6Q8?t=28s
3) You can check also paid versions, where possible to configure more advanced times configuration in the Booking Calendar Business Small version.
The ability to book for the specific times possible in the Booking Calendar Business Small / Business Medium versions (and in higher versions for booking resources with capacity =1). In lower versions of Booking Calendar (including the free version), it is possible to make bookings for specific times only for specific restricted time-slots.
Please note if you will make the booking for the specific time slot, this time slot becomes unavailable for the other visitors for that selected date in the current specific calendar.
Please watch more in this video: https://wpbookingcalendar.com/help/booking-calendar-video-timeslots/
You can configure the time slots selections on the Booking > Settings > Form page. Please use the “shortcode generator” on the right side of that page for the correct generation of the shortcode.
You can use one”timerange” (timeslots) or “start time” and”end time” selections or”starttime” and “duration”of time selections shortcodes or even start time and end time entering shortcodes. Please read more about the booking form fields configuration here https://wpbookingcalendar.com/help/booking-form-fields/
You can test the bookings for the specific time-slots in action on the live demo of Business Small version (which is configured by default for the bookings of specific time-slots) here: https://bs.wpbookingcalendar.com/
Other live demos you will need to reconfigure.
Kind Regards.
