To automatically notify a user when they're enrolled in a course, use the following automation configuration:
Go to Settings > Automations, then click[Add] and select ‘Course Enrollment’
Once there, use the following configuration and click [Save]:

To automatically notify a user when they're enrolled in a course, use the following automation configuration:
Go to Settings > Automations, then click[Add] and select ‘Course Enrollment’
Once there, use the following configuration and click [Save]: