Customize and integrate Time-slots-booking-calendar into code igniter based website

Customize and integrate Time-slots-booking-calendar [login to view URL] [login to view URL] The website is php v 5.2.17 with codeigniter. information on source code : [login to view URL] Customization > 1. Need to repeat module (Time-slots-booking-calendar) for every venue in website and only admin can activate or create one. 2. Only Show bookings panel in User account dashboard to approve and control booking (client side) 3. Pay U payment gateway integration (already integrated within website need to integrate with this) 4. Show all the payments made for a particular Venue (for different calenders) within duratio using google graph api. 5. At front end, switch calenders with dropdown or tab{ajax} (calender 1, 2, 3) . can view availability within same calender by choosing option