In the Schema Editor, you can modify schema objects in many of the available views. For example, you can modify objects, interfaces, relationships, enumerated lists, and so on.
To modify objects, you can use any of the Schema Editor views.
You can also modify objects and relationships by right-clicking objects in the Schema Editor views. For example, in the Schema Editor tree view, you can right-click an existing map class definition, and then click Edit <Map Class Definition Name>.