You're able to report on Figured on a wide range of things, including your peak milked cows & milking platform area.
To fill in those details, head to your Milk Tracker and update the details in the header as shown below.
As you can run a report looking at your farm pool's forecasts or their actuals, you can add forecast peak cows and/or actual peak cows.
Actual peak cows enables you to adjust these numbers throughout the year. The milking platform area is shared between your forecasted plan & actuals.