By default, the tab display of manufacturer parts is presented alphabetically. To change the tab order, select the Manufacturer Part you want to re-order and click the Move Left 
or Move Right 
button. The new tab order updates as the page refreshes. The Move Right button becomes disabled when a manufacturer part is in the far right position. Similarly, the Move Left button, becomes disabled when Manufacturer Part is in the left-most position.
Click Move Right (or Left) Button to Change Manufacturer Part Tab Order