[Elecraft] K3: How to use N1MM with M1-M4?

[RLVZ at aol.com]

Hi Guys,
 
Can someone advise me on how to setup N1MM so that pressing F1-F4 on the  
Keyboard selects M1-M4 on the K3?  Right now when I select F1-F4 it plays  
sound files from my soundcard rather than audio from the K3's optional KDVR3  
Voice Recorder.
 
Thanks & 73,
 
Dick- K9OM