In Faculty Access for the Web, you have the option to calculate a marking column based on the grades of other marking columns. Marking column weights (also called calculations) can be defined by the supervisor or individually by the teachers. Marking column weights are defined per school, academic year and session.
You cannot edit or delete a marking column calculation after you have associated it with a marking column and class on the Assign Calculations page under Gradebooks. However, you can create a new marking column calculation and change which calculation is assigned to the class then delete the calculation that is no longer in use.