When you initially activate the telehealth solution all of your practitioners will be enabled by default. Should you want to manage which practitioners offer this service, you can follow the below steps to remove the appointment type from individual practitioners.
Login to Practice Admin and go to Settings > Manage Practitioners
Find the practitioner you want to edit and select Edit appointment types
Delete the 4 appointment types: FaceTime, WhatsApp, Skype, Phone call
When you are deleting an appointment type a pop-up will allow you to remove for other practitioners if required - deselect any practitioners you want to keep active for telehealth appointments active.