LaborAdapter Assembly

Where would I find the library/assembly for the LaborAdapter?

I am trying to build a component that sits on the Assembly Detail page within Job Entry. It contains a button, a date picker, and a few shapes to detail the status of the operation. We are wanting to use this to cycle through the operations within that assembly and add a labor quantity of 1 to each operation to complete it and backflush the materials to the job. Currently our Project Managers are doing a Job Adjustment for each operation to add the labor quantity as we do not have our guys clock-in and clock-out within Epicor because we are integrating the payroll system we have with Epicor and do not want the team clocking in and out in two systems.