Enrolment methods
From MoodleDocs
Moodle 2.0
Location: Course administration > Users > Enrolment methods
In Moodle 2.0 onwards, selected enrolment methods may be enabled at the course level. Thus, self enrolment may be allowed for certain courses and not for others. Certain enrolment methods have additional settings.
The order in which enrolment methods are listed determines the order of enrolment options on the course enrol page.