Schedule appointments within Gravity Forms. gAppointments is great for any business that depends on an appointment calendar. Scroll down to see all features list.

Demo
https://codecanyon.net/item/gappointments-appointment-booking-addon-for-gravity-forms/21216523

Download
https://www.filecad.com/imqN/gAppointments-v1.9.3---Appointment-booking-addon-for-Gravity-Forms.rar