You can easily change speed dial settings. To set a speed dial option to a desired phone number, find the number in the phonebook grid and press right mouse button on it. In the popup menu choose "Set speed dial" item and select the key that you want to assign.
If this key is already occupied the program will inform you about that showing the name of the contact. You will be able to cancel setting or transfer speed dial to the new number. If you want to clear already set speed dial, choose "Remove" in the same popup menu.
We have added "Speed dials" management center to view and set speed dials easily. To set the speed dial just drag&drop phone number to it. You also can drag&drop numbers between speed dials. In the case you need all the working area for Phonebook, it can be easily collapsed:
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