How to record student's switching class

When a student switches classes in the course of the school year, the change has to be recorded.
The administrator can record the change via "Basic school data":

Tick the relevant student in the "Students" tab and click the "Edit" button.

select "Advanced - Changes since date"

and input the former class name and the date of beginning of their study in the current class.

If the student is enrolled in a specific group in the current class, they should be recorded in the group via changes during school year: Student switches students' group in the course of the school year. The changes in the list of students in a group should only be set in the current class, no changes should be set in the former class.