Why is Bookings not sending the appointment link for clients at the scheduled time?

I'm testing bookings to schedule interview with clients, but they are not getting the link to join the call at the scheduled time. And I can only configure reminders for 15 minutes before the appointment, which is plenty of time for someone get distracted or loose the reminder in their inbox. Is there a way to configure it so that, at the time of the meeting, they get an email with the meeting link?