Korg M1 Owner's Manual page 32

Parameters of each mode
If you choose Learn from the main menu, the CC#
assignment indication will blink, and you will be in
Learn mode. In this state when you operate a controller
on your external MIDI device, the M1 software synthe-
sizer will receive that CC# and will assign it to the knob.
Learn mode will remain active until a CC# is received. If
you want to exit Learn mode, right-click (Mac: Control-
click) the knob and choose "Cancel Learn Controller"
from the popup menu
You can't assign the same CC# to more than one knob.
The most recent knob assignment will be used.
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