Choose Inherit to derive a new class from the selected item and add the new class to your project. When you recompile your project, any changes that have been made to the item Will be reflected in your derived class, in addition to changes you make to the item in your project. Changes made to your derived class do not affect the shared item in the Object Repository. 

Inherit is available for forms, dialog boxes, and data modules, but not for project templates. It is the only option available for reusing items within the same project.