Three types of rules allow you to organize how material is presented to end-users.
The traversal rules define whether the learners must see and complete the units sequentially or not.
The completion rules allow you to define when a course is set as completed.
Finally, you can add prerequisites between your courses, using the availability rules. A course can have any number of courses as prerequisites.
Note that all courses are shown in an alphabetical order except if they have prerequisites (where we order them based in the way they should be completed).