Enrolment

I wanted to do some testing with LDAP enrolment and when I go to Courses/Enrolments, I see a box at the top that says:

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Please choose the enrolment plugins you wish to use. Don't forget to configure the settings properly.

You have to indicate which plugins are enabled, and one plugin can be set as the default plugin for interactive enrolment. To disable interactive enrolment, set "enrollable" to "No" in required courses.

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...but there is no content under it like there used to be.

Is there a way to make this appear again? Can I change something in one of the tables to get it back?