multiple calendar in same website

Hello.
If you need to have ability to manage the several booking resources and have the different booking forms (calendars) for the different apartments, then you need to check and purchase some paid version of Booking Calendar. Please read more about this feature here : http://wpbookingcalendar.com/overview/#booking-resources
Please read the general instruction about usage of paid versions of Booking Calendar: http://wpbookingcalendar.com/faq/general-usage-instruction/

You can check overview of different Booking Calendar versions at this page: http://wpbookingcalendar.com/overview/
Also you can test live demos http://wpbookingcalendar.com/demo/ to be sure in functionality and do not have misunderstanding.
Kind regards.