To add a new band to the current tariff table, click on thetab, as shown below:
The following pop-up window will appear. Fill in the required fields, then click on thebutton to apply the changes.
A new window will appear, where you can edit the properties of your band:
To add a code to the current tariff table, click on the tab at the top-right corner of the screen, as shown below:

A new window will appear, where you can edit the properties of your dial code: