Place your cursor over Reference Data and left click on the sub-option Station Addresses.
Find the station address that you would like to edit and left click on the Edit button 
on that line.
Enter the changes that you would like to make to the information. The field highlighted in green is required.
If your screen shows some of the fields highlighted in yellow this is because of a setting in the Google toolbar that has an auto fill feature. If you would like to change the setting so that fields are displayed properly go to Views/Toolbar on your browser and make sure that Google is unchecked.
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.