1. In the administration panel, go to Settings > Shipping settings.
2. Clear the Disable shipping check box (if it is selected), select the Enable Swiss Post check box, then click the Save button to save the changes.
   

   
   
   

3. In the administration panel, go to Administration > Shipping & Taxes > Shipping methods.
4. Create a shipping method or choose the existent one.
5. Click on the name of a shipping method to modify it.
6. Select Realtime in the Rate calculation field, select Swiss Post International PostPac PRIORITY in the Shipping service field.
   

   
   
   

7. Open the Configure tab and select the necessary options there.
   

   
   
   

8. Open the Shipping charges tab and define shipping charges which will be added to the ones returned by real-time shipping service if it is needed. Click the Save button to save the changes.
9. Open the General tab, enter the desired value into the Weight (lbs) input field and click on the Test button next to the Shipping service field to make a test calculation of shipping charges.