From the navigation panel on the left side, click on Orders or Shipments. You should see the tabs as highlighted below in the image. The first tab “All” in both Orders and Shipments, cannot be changed.

Click on Tab Settings to the right side of the tabs menu area.

You will have a window pop out from the right side showing the Order List Tab. From here you can click and drag a tab up or down as you wish. This will automatically save, and the changes will be reflected instantly.

Same Address dragged up, and on the left, has changed instantly.