Programming your 1, 2, 3, User Define Keys on the Top of Your Device.
Video (Click play button to start.)
The user-defined keys on the front of your case were pre-programmed for you at the factory. However, you can assign a different Tool to perform any function you want.
Assign a Tool to a Front Panel Key
1. Select ASSIGN CORE KEYS 
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2. Select the #1, #2 or #3 key on the Front Panel.
3. If the key has already been assigned a Tool, you will see a yellow information box that tells you what the Tool is. If nothing has been assigned to the key, the box will tell you that the key is blank or empty. Select YES to continue or NO to quit.
4. You see the All Tools screens. Select the Tool you want to assign to the key.
5. An information box tells you what Tool you have just assigned. Select OK.
6. From now on when you select that front panel key it will perform the function you assigned to it.