i want to design an interface for formula creation.
Example Suppose A-level, O-Level , Test Marks . Interview Marks are the fields which can be used to configure merit formula.
for instance an administrator want to configure formula as,
70%(40% A-Level + 10% O-Level + 50% Metric) + 30% Interview.
If he wants to do some other way he should be able to do so.
I want a few ideas on Design of the interface which should be given to Administrator to configura formulas like this.
I will really appreciate if anybody gives me a hint in managing the problem well.