You'll now be at the screen below. The suggested values will be filled in for you automatically, namely:
The current date in the bike's calendar will be shown, and may be changed, if it's incorrect.
The date to perform a 1-year service will be calculated and pre-entered into second field, based on today's date.
The next service mileage interval will be calculated and entered into the third field.
Note that even if you're displaying distance in miles, the last value is internally computed as 10,000km, so it will actually suggest adding 6214 miles to the current odometer reading rather than 6000, unless you change this value manually before pressing the button.