Moodle provides a number of ways of managing course enrolment, called enrolment plugins.

To set an enrolment method:
Click on Administration > Site administration > Plugins > Enrolments > Manage enrol plugins.
Click on the enable checkboxes opposite your chosen enrolment plugin(s). If you wish, you may choose more than one enrolment method. For example if you have some courses which students must pay for and some free courses, you can use PayPal and self enrolment.
Click the “Save changes” button.
Click the settings link opposite the enrolment plugin(s) you have chosen.
Configure the required settings and click the “Save changes” button.
Repeat until you have edited all the plugins you have enabled.
The order in which enrolment plugins are applied can be set. This may be important for some plugins. It also affects the order of enrolment options on the course enrol page.
Enrolment capabilities
Category enrolments:
Role assignments synchronised to course enrolment
Cohort sync:
Configure cohort instances
Guest access:
Configure guest access instances
LDAP enrolments:
Manage LDAP enrol instances
Manual enrolments:
Configure manual enrol instances
Enrol users
Manage user enrolments
Unenrol users from the course
Unenrol self from the course
Course meta link:
Configure meta enrol instances
Select course as meta linked
PayPal:
Configure PayPal enrol instances
Manage enrolled users
Unenrol users from course
Unenrol self from the course
Self enrolment:
Configure self enrol instances
Manage enrolled users
Unenrol users from course
Unenrol self from the course
Course:
Configure enrol instances in courses
Review course enrolments
See also
Unenrolment
Enrolment FAQ
Using Moodle Enrolment Plugins forum
