It's possible at the Business Small and higher versions of the Booking Calendar.
You are need to activate at the general booking settings page the "range days selection using 1 mouse click" feature. Then you are need to set the number of days selections as 8 days and after that set the start date as Saturday.
Then, at the same page, you are need to activate the fixed time and set start time as 13:00 and end time as 12:00, so you will be able to use the Saturday as check in/out date for the different bookings.
Please test it at the live demos here http://wpbookingcalendar.com/demo/ to be sure in functionality and do not have misunderstanding.