Some users may be unsure on how to change the order that components are selected with the Tab key. The order is based on the position of the components in the outline.
Check the screenshot above for an example. A user who clicks on Field 1 and then presses tab will make the cursor jump to Field 3 next since it is below it in the outline. Moving Field 1 above Field 2 will allow the tab ordering to flow properly. You can move the fields by dragging them in the listing.