Only send confirmation to service provider and admin

Hi Guys,

I'm in need of some code that I can add somewhere that will make sure that Appointments+ only sends a confirmation email to the service provider and admin only.

I have the plugin configured to automatically confirm bookings, but I do not want the customer receiving a confirmation email. It is important that both the admin and service provider do receive confirmation emails.

Note:
- I still want customers to receive reminder emails.
- Disabling 'Send Confirmation email' function, disables emails for everyone.
- Enabling 'Send Notification to admin if confirmation is required' function, does not send an email to service provider and does not work in my scenario as confirmation is not required.