Student fee management in tally

In institute for Vocational Traning with Courses like Abacus, Arts, Music, Dance etc, I want ot configure fee recipt in Tally,

I created groups under Sundry debtors as 1. Students.

Under students - Abacus, arts, Music etc.

We are allotting Unique number to each student. But unlike regular schools, here students are taking training in multiple courses. With ledgers for each student and Admission number, problem I am facing is that how to link these ledgers to multiple subgroups like Abacus and link the fee structure.

lao the fee structure is not fixed and basic amount varies depending when the student had joined.

Pls guide.

Thanks