To add student as Library Member, go to Library > Add student then select the Class and Section and then click on the Search button to display student list. Now click on + icon from student's list,  at click of this icon a modal will open, here enter Library Card Number  and then click on the  Add button.



The added student will be shown in green color row in the student list. To remove student's membership click on the Surrender button present in Action column.