I can inherit the model and modify the state field. The problem i am facing is inheriting work flow. If i want to add "approve" in between "draft" and "open" these two Activities, and transitions and work flow should available in inherited view. It's not enough if we write only "approve" activity and transition. I believe that the transition of "draft" to "open" need to change like "draft" to "approve" and need to write new transition for "approve" to "open". We should write these two transitions, but it is asking for "workflow", "activities" . For the time being i had write these in inherited view. Does this write way?