To be able to add an item by a scanner, go to the Management Console settings. Under Settings>Retail Service Settings>check "Create an item on unmatched barcode."
The following window will pop up when a product is scanned that is not in the system. In order for the item to be saved, turn "Save to Server" on. The other fields can be edited in the Management Console if saved.
Once saved, the product will appear in the Management Console under the Category and Subcategory of Additional Items.
By default, the Product Description is "addedfromipad"