Navigation: Configuration > Classification > Material type >
See how to do it:
1.
On the main screen toolbar, click on the button.
2.
Fill out the following fields on the data screen that will open up:
ID #: Enter a number/code that identifies the material type.
Name: Enter a name for the material type.
Upper level type: Select the material type that is one level above record in the hierarchical structure.
3.
Save the record after filling out the fields above.
button.