Hi Shan,
it's been awhile since I wrote this thread, thank you for answering, now I have the same problem with the self enroled students.
The self enroled students doen't appear in the manual enrolment list! That's why these can't be deleted from that course.
Does the admin have to set settings in the role of the teacher to let all students of a course appear in the manual enrolment list ?
E.g. there are 633 participants in the course, 544 have been manualy enrolde and the rest enroled them self! The manual enrolment list just shows the 544 students. How can I unenrol the other (89) students, too?
Cheers,
Monica