Online courses on DLE, how to implement a phased course?

Question

Learning Management Systems

I want to implement courses for users on my information portal. There are plugins for WordPress such as learnpress or tutor lms, but still I want to implement it on the basis of dle.

I see the implementation method as follows, one category is one course. News in this category are lessons for this course.

Question 1: How to make sure that these news are in order one after another, so that if you click the next lesson, they go to the next lesson, but the important moment when you click the button has finished this lesson, you need to mark the current lesson with the label completed! how can this be implemented?

question 2: can there be any ready-made solutions on the Internet ??