Additional salary (formula-based earnings)

It will be a nice feature to have during payroll processing of additional salary/ The user should be able to choose the formula in the salary component, instead of inputting an amount.

Say BASE = $1,000
LEAVE ALLOWANCE = $500 (i.e., 50% x BASE)

Rather than inputting an amount for ADDITIONAL SALARY as we currently have it, the feature will allow the user choose to apply the formula as stated in the AMOUNT BASED ON FORMULA field in the SALARY COMPONENT document.