Displays materials and material properties. Select the needed material. To modify
material properties, click the ellipsis 
in the material selection field. Then, select Edit Properties.
Material Search String - Type part of the material name to search against.
Find Next Matl - Click to go to the next matching material name available.
Cancel - Exit the dialog box without selecting a material.
Click Tools > Configuration > Database Definitions to select or change the active material database file.