Zoom F8n Pro 8-Input / 10-Track Multitrack Field Recorder - Manual (Page 45)

Setting the track knob function (Track Knob Option)
The Home Screen layout and track knob functions can be changed.
You can adjust trim, fader and pan settings with the track knob by changing the track knob function.
1.
Press .
This opens the Menu Screen.
2.
Use to select “SYSTEM”, and press .
3.
Use to select “Track Knob Option”, and press .
45