Navigate to the Course Management page and check the total number of enrollments in the Enrollments column.

To view the list of users enrolled in a single course, click the enrollment icon in the associated row.

This will bring you to the Enrollments Tab for the specified course.

Here, you can:

You can edit an enrollment by repeating the Enrollment steps outlined above.

NOTE! You cannot un-enroll a user from a course. If a user leaves your organization, you can deactivate their account via the user management menu. If a user has been deactivated and they have not started or completed a course, their enrollment will not be counted toward your total allotted enrollments (seats).