Additional Fields on Driver Trip Page

If possible, I'd like for additional fields to be added to the trip page under driver pay.  It currently only has accessory pay.  But I'd like to have additional fields like Tarp Pay, Detention Pay, Layover Pay.  I'm currently writing on a white board in the office, and on pay day I'm creating additional pay fields.  But that doesn't seem like a sustainable way of doing it with growth.  If that additional pay could be added to the driver while creating the trip, it would reduce any chance of oversight.  Thank you have a great day.