Insert items in the input window as Line items .

1. Click on Line items >  Add in the bottom part of the input window. Only the items that have been created as supplier items for the selected supplier are offered for selection (Creating suppliers and supplier items).
2. A list of all items available from this supplier will open.
3. Double-click on one item or select several items by holding down the Ctrl key, left-click and  Apply.
4. Click on  Add >   Supplier item to search for other items for which supplier items from other suppliers already exist. If you select one of these and  Confirm, a  New supplier item will open which is pre-assigned to the master item and the currently open supplier.
5. Enter a Count (of packaging units) or Quantity (of content units) of the items in the appropriate column. The packaging units specified in the supplier item are taken into account and the values are automatically rounded up.
6.  Save your input by clicking on the icon in the top left-hand corner of the input window.