I am working for a project on "Rental charge income on Equipments". For that the Bills will be raised on 1) Rental amount (fix for a period) + 2) Extra time engagement (for the hrs. engaged beyond the schedule time job)+ 3) Fuel charge (for the amount expended to run the equipment) + 4) Accommodation charge (for the operators ) - 5) Breakdown (Less - for the equipment break down period in hrs.). Please suggest me for 1 to 5, which module should I use.