What's New: Creo Parametric 4.0 > Assembly Design > Material Assignment
  
Material Assignment
You can add materials and perform actions on materials from a shortcut menu.
Release: Creo Parametric 4.0
Benefits and Description
The Edit Materials command is added to the shortcut menu. You can right-click the Materials node in the Model Tree and select Edit Materials. You can right-click a material and select the commands listed below:
Assign
Edit Definition
Delete
Info