Bear in mind that only admins of the main Page are able to make changes to location Pages.

The location descriptor will be "(City)" by default, or "(Address, City)" if there are multiple locations in the same city.

To edit the location descriptor:

1. Go to Page settings.
2. Click on the Locations tab.
3. Click on the Pen icon located in the last column next to a location.
4. Make edits in the Location descriptor text field.

You can also change the location descriptors by visiting the Location descriptor line in the Page Info tab in your Page's About section.

* Nguồn: Facebook