You can customize the ordering of your job codes in the mobile app selector. To do so, click on the number in the Position column and add the position order you want. Hit Enter / Return to save. You will notice the items will reorder to match your new ordering. Lower numbers display first. These ordering changes will be available to your mobile users within a few moments.
Additionally, you can always edit the Title and Description you want to change and hitting Enter / Return when done.