Online appointment booking system with gCalendar, paymill.de, reminders for wix.com site

Hi, we're looking for a programmer who can understand and refine the concept, research the APIs of the parts to integrated in an existing website based on [login to view URL] Features as an e-appointment system are -appointment booking with and without registration of clients -public for client can book an appointment can view available appointments can book multiple appointments can view cancellation policy can login or create client account lost password -logged in area for client can view downloadable documents can view list of his appointments and cancel can download test results can download terms of use documents payment with api to [login to view URL] -administration area pre-appt and post-appt individually set create and change plan of available time for appts create and change names and prices and descriptions of appointment types manage client file area manage clients syncs with google calendar that contains free/busy information This site is to be hosted probably at [login to view URL] or another php hoster. Must interface with [login to view URL] website system. Usage of open source components is welcome. Here is what we are trying to fix: We have a website with an e appointment system unter the tab etermin [login to view URL] The problems are that a couple of missing and broken features. Thank you for your bid, please feel free to ask us relevant questions. Best, Zaliha Yanikomeroglu