Part labels generated with "Print Labels" functionality allow you to add labels to your part before even taking a first photo.
Once you attach printed labels to your parts you can quickly pair them with the real parts by just hovering the app camera window on your pre-generated part labels.
To print the labels, first you need to configure Ovoko Print Hub. Learn more about it here.
Once you have the Print Hub configured follow this guide to print your first empty labels.