Suppose one grade has two sections A and B. In section A there are students studying optional mathematics and optional economics. Same case is for section B also. Students of section A and B need to study Optional mathematics in 2 different classes taught by two different teachers at the same time. But for the students studying Economics, students from section A and section B are combined and taught by a single teacher in one classroom. In this case how to set activity?
Maybe like in the attached file. Enter Students years dialog and Divide automatically by categories and see how I added 3 categories with 2 divisions each.