If a course is listed in a catalog users when viewing the course/community catalog will be able to search for the course (there is a checkbox to restrict courses listed in the catalog display to just those courses for which self-enrollment is available). If such courses exist the list of courses will include a self-enroll link for each course. Users can reach the course/community catalog from the Main Menu screen, and also from the roles page. Course Coordinators and other users with advanced roles in the system can also reach the course/community catalog in the same way, although the link on the roles page is less prominent for these types of user.
A user must be logged into LON-CAPA in order to self-enroll in a course. However, if your domain permits it, users may be able to create a LON-CAPA account and log-in. Most commonly self-creation of accounts is permitted where a user can authenticate with a username and password assigned by your institution to access online services provided by the institution. If a user clicks the "Enroll in course" link from the catalog, and needs to create an account, once the account creation step is completed successfully, the user will proceed automatically to self-enrollment in the course, assuming the user meets any restrictions set for self-enrollment in the particular course.