This is a practical version of the CW tuning indicator for IC-7410. You can select the CW pitch of your choice between 450Hz and 750Hz using one of the radio buttons on the panel. The selected pitch is shown on the display as a dark green bar.
You can tune manually so that the peak of the bar graph coincides with the dark green bar.
The next thing to do is to click on the display either on the bar graph or on the waterfall to tune in on that frequency.