ATV320 Programming how can I display hertz instead of percentage as the default?

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Issue:
How do I show hertz instead percentage on the ATV320 HMI default screen?

Product Line:
ATV320

Environment:
All serial numbers

Cause:
Customer requested

Resolution:
Goto "Mon" menu
Goto "rFr" (output frequency)
Press "enter" (push in on the green dial) to display the current output frequency.
Press and hold "enter" for 2 seconds to save as the default display.
Now ,the drive default display will show hertz (hz)