By default, model users have full access to all model features. By setting model security preferences, you can control which features users have access to when using your model. You can hide workspace features like toolbars, navigation tabs, scroll bars, zoom controls, and the Run toolbar. You can also set a password for the model so that model users can't change the security preferences.
Model security preference settings take effect immediately and apply to the current model only.
From the File menu, choose Lock Model.
The Security Preferences dialog box will open.