I want to get the following requirement to be fulfileld.
1. I have enabled "self-enrollment" - without a key and the users can enroll themselves in the courses.
2. After some time i want to unenroll some selected users who have not make the required payment.
3. What i want to do is if i unenroll any self enrolled users i want to disable self enrollment option to such unenrolled users and they should be enrolled under manual enrollment only. (the self enroll option for the rest of users and new users should be available as it is, whilst it is not available for unenrolled users)