You can delete the existing enrollment that is associated with a particular student.
Only the school administrators and the teachers can delete the enrollment from their organization.
You can delete an enrollment from the Student Details page, shown below. Navigate My Students > click the student to enroll > click the Student Details tab. To delete this student, click on the delete icon seen at the bottom right of the course under the Enrollments tab.
Note: You cannot delete an enrollment if there is an active schedule for that enrollment. In that case, you will receive an error message.