Need primary fee to show on drivers settlements

Our drivers are paid a percentage of the primary fee. There is no option for the primary fee to show on their settlement. I can check the “show gross pay” button but gross pay includes the fuel surcharge and any accessory pay making the driver unable to actually know what dollar amount their percentage was calculated from. We believe in transparency and a driver shouldn't have to question how his paycheck was calculated. We need an additional box to check when creating a settlement to show primary fee only, or at the least an additional column for the primary fee. Thank you!