Right-click the SmartObject in the category tree and select Edit or Properties
Select the SmartObject in the category grid and select Edit or Properties from the toolbar, or right-click the SmartObject and select Edit or Properties
The Properties menu item opens when you select Properties. You can also edit your SmartObject from this page.
When you edit a SmartObject, a new version of the SmartObject is created. If this SmartObject is used in a view, you must edit the view to include the changes made to the SmartObject. For example, if there is a view called Student Details which uses the Student SmartObject, when you edit the SmartObject and add a new property (such as Student Address), you must also edit the Student Details view to include the new property.
When you change the SmartObject name, only the display name changes (not the system name). The name change automatically applies to any views , forms, and workflows. The system name stays the same so that your solution continues to function.
From the Designer landing page
