Course management Description：The main purpose is to add the school's courses for sale, determine and modify the billing standards of the courses, [In particular, the billing standards should have basic standards such as the basic unit price of a certain course for 1 lesson (one month)] Secondly, if the course is temporarily discontinued, it can be turned on or off by a switch, but it does not affect the sale.Courses and corresponding classes and related courses for corresponding students

Add courses: Academic Affairs Center="Course Management="Add Courses

Other settings：The course is opened or closed, the course is edited, and the course is deleted (in particular, the course cannot be deleted after it is used)