You can use the Edit Locations dialog to edit the description of a Location resource for the target Azure platform.
In the Web Interface toolbar, select the Platforms tab.
Select the platform, then click Edit.
Under Associations, select the Locations tab, then click Edit (or double-click the location) to open the Edit Location dialog.
Modify the Description for the Location resource.
Click Save to update the Location resource.
Click Close to exit the dialog.