the Cascading Lookup Field
Simply click 'Add new item' below the Orders list (you
need 1st to sign-in using the details above) and fill out your
Region->Country-> City cascading drop-downs. The Cascading Lookup
field allows you also to add your country or city without leaving your New/Edit
You can use this powerful field type in any SharePoint
list or library, and the best news is that it's so easy to use
For more details visit the Cascading Lookup Plus field product page.
Got any questions?
Contact us at firstname.lastname@example.org