Place your cursor over Reference Data and left click on the sub-option Jet Ports.
Find the jet port that you would like to edit and left click on the Edit button 
on that line.
Enter the changes in the displayed fields.
Use your Tab key on your computer keyboard to navigate through the fields or left click on each individual field.
Left click on the Update button 
to save the edited information.
Left click on the Cancel button 
if you do not wish to save.