To fully benefit from all the features offered by XP and XP+, some additional plugins may need to be installed. All of these are free and available directly from moodle.org.
The plugin enables instructors to conditionally allow or restrict access to activities or sections in courses based on a learner's level. View on moodle.org
With this plugin, learners can automatically be enrolled in a course based on the level they attained in another course. View on moodle.org