The model to be deleted is not open in any Storyboard.
Choose (Manage Models) button in the main toolbar. The Model Browser dialog box is displayed.
or click theIn the model hierarchy, drill down to the model to be deleted and select it.
Click the (Delete) button in the toolbar. A Confirm delete message is displayed.
Note
If a confirmation message is not displayed, choose
tab, and select the relevant Request confirmation before deleting checkbox.Click Yes to delete the model.