Markbooks and reports

Hello, I would appreciate if someone could show me step by step how to create a markbook with a number of columns, as per the picture below.

I have looked through your documentation and the forum, but I haven’t found a topic that would address it clearly or be up-to-date. I believe Gibbon is constantly changing . Apologies, I haven’t used such a program before, so I find it all a bit confusing. We teach several secular subjects to little monks in Nepal and would like to track their progress in a more streamlined way. We submit reports twice a year in which we present their total scores and improvement as seen in the column L and M. From what I saw on the forum, such reports would have to be created separately? I have managed to set up basic profiles, classes, courses, school-year and a grading system. It would be very helpful if there were more tutorials or documentation on the topic available for the dummies. Thank you for your work!