Enrolments 2.0
(Still only a stub - under construction)
Enrolment has to do with how participants get enrolled in courses. (ie not how they become members of a Moodle site)
Enrolment methods are plugins.
Enrolment options are set at system level to determine what enrolment options that are allowed at course level.
If a particular enrolment is ON at system level, it may then be switched ON or OFF at course level.
Enrolment
Whether or not a course is available to students is chosen in Course Settings.
What enrolment methods are available at course level are switched On or OFF in Settings > Users > Enrolment methods.
Self Enrolment
Self enrolment options are set in Settings > Users > Enrolment methods > Self Enrolment