To add a new part for your equipment, go to the "Resource Tab>Trucks/Equipment".

Choose the equipment for which you're adding the parts and click the pencil button.

Next, click the "Parts" tab at the top of the page.

You will see any parts you've added for this equipment here.

Click the "+ New Part" button to add a new part.

A pop-up will appear for you to add the part number and a description.

When done, click the "Save" button.