[DEA] Being able to filter subjects not enrolled in any program

[mahalakshme]

Need:

Consequent to this, user being able to filter subjects not enrolled in any program so that, I can view their profile and enrol them into relevant program

AC:

• In the 'Enrolled in' dropdown show the option 'Not enrolled in any program'
• When that option is selected, and clicked Search, show subjects of the selected subject type not enrolled in any program
• When the above option selected, along with a program say 'Counselling', then show subjects of the selected subject type enrolled in 'Counselling' along with subjects not enrolled in any program