The Custom Texts tab of the Barcode Editing Screen offers a way to add your own texts to a barcode in addition to barcode data. The upper part of the panel displays existing custom texts (there are none if you switched to the tab for the first time). Click the Add New button to add a new custom text to the barcode.
Adjust the position of the text using the horizontal and vertical offsets ans specify the font for the label. You can select custom texts for editing by clicking them in the list. To remove an element from the list, select it and click the Delete button.