How come if I click on "Add individual course," the system redirects directly to the enrollment panel?

By clicking the "Add individual course" the system will redirect directly to the enrollment panel, since since this is precisely an individual, the course will be created with the simultaneous enrollment of the student.

However, before enrolling, the types of individual lessons, i.e., the offer that will then be entered during enrollment, will have to be created in advance.
Then navigate to Didactics → Individual Lessons, click the button Definition of course types and below that the button Create new type. (Click here for the mini-guide on course types).

After that in the enrollment phase, after choosing the student and the subject matter of the course, the system will ask for the type of offer to be docked, i.e., one of the previously created types of individual lessons.