1. Enable Packeta modul
2. In the administration Settings → Interconnection → Zásilkovna API key insert the API key.
3. You can obtain the API key for Packeta in their administration client.packeta.com where you sign in with your username and password to.
4. In the administration Settings → Delivery and payment → create a new shipping method named Packeta
5. It may take up to 24 hours to load all the data needed.