Deliveries
To add delivery click on add delivery button.

Now choose your supplier. Click on supplier field.

You can choose supplier from the list or add new one.

Enter the ordered materials using the add position button.

Now click on material field.

And choose material from the list or add new one.

Enter the amount of ordered material and click ok button.

Ok that's it. Your delivery is now in finished status.

tip
If you don't want to receive goods now, uncheck the automatically receive goods option from the drop-down menu. After that, you can use the perform delivery button to receive goods.