The Fees module provides tools that allow users to create and assign fees to persons and students, mass assign fees to a selected group of students and set maximum fee limits. Also available are three reports for generating fee-related information about payments, fee reviews and statements.
To assign a fee to an individual student you must be in the students fee tab.
To assign a fee to some but not all students in a course you will want the fee set up as "optional" during the fee set up process.
