1. Setup Optional Subject class wise for Admission and Student Online Registration from their respective setups 
     (Online Registration Setup changes done by Sarangi madam, so for any issue on that page pls contact her).
2. Now that the setup is done save an Admission or Online Registration form for a student and make sure you also save optional subject.
3. After creating the Admission form or Online Registration Form convert the form to student and go to Assessment -> Optional Subject. 
4. New tab is added (Pre Optional Subject). Subjects saved in the Admission or Online Registration form will appear there and once you save it they will appear in Main Tab 
    i.e Optional Subject.