Choose (Manage Models) button in the main toolbar. The Manage Models dialog box is displayed.
or click theIn the model hierarchy, drill down to the model you want to rename and select it.
Click the (Rename) button in the toolbar. The name is activated for you to edit it.
Edit the name of the model, adhering to these conventions:
Only alphanumeric characters and underscores
No spaces or punctuation marks
No special characters
Press Enter.