Edit a class
In Creo Elements/Direct Model Manager you can edit the definitions of an attribute’s class.
To edit a class,
1. In Creo Elements/Direct Model Manager Standalone, click Admin on the Workspace Bar.
2. In the left pane, under What do you want to manage?, click Attributes and Classes. The Attributes & Classes Management pane opens.
3. In the Attributes & Classes Management pane, expand the categories (for example, CAD Documents or Packets) to see the various database classes (for example, Model_3D or default_packet).
4. Right-click the class and, on the context menu, click 
Edit. The Class Definition dialog box opens.
Edit. The Class Definition dialog box opens.5. Modify the values in the Name box, the Description box, the Default Element ACL box, and the Class ACL box, as desired.
6. Click OK to complete the operation.