Employees may have different billing rates for each client. And when employees scan work orders on the manufacturing shop floor, you want the correct billing rates applied. In other words, clients should be billed appropriately for each employee or kind of work performed.
Your welders likely bill out at different rates than your project managers. Maybe machinists and metal workers bill differently than material handlers. The point is, custom and bespoke work orders can use a mixture of billing rates. Those rates depend on the kind of work that goes into the job.
When you finally run the client invoice, you’ve got appropriate rates for everyone who contributed. And there’s nothing special you or your employees need to do. Just set up the rates once, and you’re good to go. Now employees just scan work order barcodes when they start and stop the job.