To use this module, you need to:

1. Configure some product stickers on Settings > Technical > Database Structure > Product Stickers.
2. Enable default position for stickers on Invoicing > Configuration > Settings > Invoicing > Customer Invoices > Product Stickers.
3. Create an invoice and change Product Sticker position under Other info tab > Invoice > Show Product Stickers.
4. Print the invoice to see those stickers.
