To modify call charges for a specific dial code or destination, follow the steps below:

1. Log in to TIM Enterprise, click on the tab and select the tariff you want to amend from the drop-down list, as shown below:
   
2. Locate the dial code for which you want to amend the charges, by entering the code in the search box provided.
   
3. The matching dial code will be highlighted in the list, showing its associated charge band and destination.
    
4. Enter the destination or band name in the search box.
   
5. The matching band will show highlighted in the list, as shown below:
   
6. To configure the properties of the selected band, click on it to open the Band properties window.
   
7. To change the current charges for any of the available rates, enter the desired values in the field provided.
   
8. To see how each rate is applied, click on the ... button and change the current entries, if required.