Good news, we have a native bookings feature! With our"Appointment" question type, you can connect one or more Google calendars to your form, and automatically manage availability hours, and creating events on your calendar.

Appointment example

If you would like to use a separate calendar software, you can use a third party app, and then embed their calendar (if they support HTML embeds) using HTML on Agency plan, or you could simply link to it in the form on any plan.