Bookem Video call is a Bookem Plus feature, which automatically generates video call links for virtual appointments. The beauty of using the integrated Video call feature is that Bookem does all the work for you, you do not need to use a third party for your video calling.
Create a Service in Settings - Services and set it as a Video Call under "where is this service provided" (in this example it's a service simply called "Video Call")
Create Video Call Automated Messages in Settings - Automated Messages +Add New and Start with a NOTIFICATION.
Name your new message
Add all the video call service/s you want this message to apply to under "For what bookings would you like to send this message"
Compose the SMS and Email messages and insert the Variable Video call link where necessary, this is what you and your client will click on to launch the meeting.
Follow the same process to create your Appointment Reminders (no need to create a new service as this is done already) - ideally setting a reminder for one day before the appointment and perhaps shortly, e.g. 20 minutes, before. Each of these messages can be worded differently, but should all include the Variable Video call link.