Appointments+: How to Send Out Confirmation Emails to Users

Dear WPMUDEV,

For the Appointments+ plugin, after users enter their information for the appointment form, I was wondering how the site can send them an automatic confirmation email and how it could send me an automatic email regarding the new appointment.

It seems that when they sign up, neither of those are working. I looked in the Settings on the back-end, and I checked all the boxes regarding email sending to "Yes".

Thanks, let me know!