You can choose to turn off Live Training confirmation emails. This may be useful when you are adding students to a live event after the fact (either manually or by bulk), and would like to avoid sending your students unnecessary emails.
This feature lives in the Course Management section of the dashboard. To access it:
1) Navigate to the course the event is located in and expand the 'Settings' column:
2) Uncheck 'Email Student On Registration And Event Updates.'
3) Click 'Save Lesson' to commit changes.