The booking form is connected to a PayPal payment page.The customer can book an available time slot from a defined set.You can use it to accept bookings for medical consultation, classrooms, events, transportation and other activities where a specific time from a defined set must be selected, allowing you to define the maximum number of bookings that can be accepted for each time-slot. The booking form is linked to a PayPal payment process. Appointment Booking Calendar is an appointment calendar plugin for accepting online bookings from a set of available time-slots in a calendar.