You can enroll both new and existing users by using a CSV file.
Choose the best way to enroll users in your course/s.
If you want to let existing users enroll themselves in your course/s, this option may be the most suitable for you.
You can enroll existing users in a course by listing their email addresses.
Create a unique enrollment link that new and existing users can use to sign up or log in and enroll in the course.
You can easily enroll existing users in the course by selecting them from your list.
Instructions on how to create a batch for a course