Configure: How to Edit Cities

Step 1. Navigate to the List named "Cities"

In the company details, click on the "Lists" tab and scroll through the drop down to Cities 

Step 2. Choose the City you wish to alter:

Step 3: Edit

Delete: When you delete an item from this list all records with that value will be set to empty
Edit: When editing an item on this list all records with that value will be updated
Reassign: When editing an item on this list and make it equal to another item on this list all records with the former value will be updated and the list items will be grouped together.