Time entry for CAM work orders

Hi

We are working in E9.1 and looking for options to capture labor time entry against maintenance work orders. The objective of capturing labor time entry is for reporting/internal recharging purpose and not related with payroll. The best option is to use speed time entry P051121 (without payroll) against each work orders. Currently we are using payroll time writing . so do not want to confuse the users with maintenance time writing using the same application. Another point we've noticed that when we capture time entry thru P051121 , there is no validation against estimated labor time mentioned in labour instructions (P13732)