On the Replay screen there is a small "Splits" tab in the lower right. Opening this tab will give an overview of your current splits for this car and track combination. You can view either your overall or session optimal and best split and lap times. You can click on an optimal sector or the optimal lap or best lap to select that item, then use the Clear or Replace buttons to clear the selected item, or replace the selected item with sectors or laps. Eg: you can clear your overall optimal lap, or replace your overall optimal lap with your session optimal lap or overall best lap.
To clear or replace a single Sector, use your mouse and click on the sector.
To clear a all sectors or complete lap, click the Lap time and all times will high light.
