This article will explain how service providers may add mileage or travel expenses once a job has been added to an invoice.

From the Usked web portal:

On your invoices page, you will see available fields to enter travel expenses, miles, and/or notes.

From the Usked app:

Open the menu and tap on Manage Invoices.  Your current invoice will show up by default. Tap on the invoice amount white area.

On the next screen, you will then see all assignment(s) that are listed on the invoice. Tap on the assignment you want to add mileage or expenses to.

You should then see a pop up box that will have fields for you to either enter travel expenses, travel mileage, or travel notes. Type as needed, and then click on "Update".