You have the option of modifying the selected rates.
Use this in 'bank rate + 2%' type cases.
The interest rate that would otherwise apply will be adjusted in accordance with your instructions.

No Adjustment

The prevailing rate will be used without modification.
Add/Subtract Percent

The prevailing interest rate will be adjusted in accordance with the percentage points you specify.
The number can be +ve or -ve.
Multiply by

The prevailing interest rate will be adjusted by multiplying it by the quotient (number) you specify.
The number can be +ve or -ve.