I have a client that wants potential customers to be able to request appointments through his website. He currently has his Facebook page set up with the Facebook appointment booker–it’s linked with his Google Calendar. He says he wants the site set up so that the booking app on the site knows what time slots are available on his Google Calendar and provides those available options to the potential client. Different services that he provides require different allotments of time on the calendar. However, he wants to be able to approve appointments before they are committed into the calendar. Is this possible, and what set up and/or prefered web apps would you use in this case? Thank you!