If you create an order for a specific subcontractor, you can see what the order history for that subcontractor is. You can also filter for instance the location so you can easily see how much you paid that subcontractor for a similar order you like to ship or on the subcontractor.
Navigate to Orders /Click on Orders.
Click on Assign resources.
Now you will see a new modal popping up. Here you can click on Subcontractors.