The Manual Factor amount can be updated manually for cost control objects with a Manual Factor forecasting method.
When the Manual ETC forecasting method is selected, the background color of the Manual Factor column turns green.
Navigate to Forecasts > Forecast.
Click the Forecast tab.
Type the Manual Factor for the cost control objects with Manual Factor forecast method.
Click the Save icon.
Manual Factor forecast method calculates the New EAC value using the formula:
[AC + ((BAC-EV)/Manual Factor)]. Where AC is actual cost, BAC is Budget at Completion value, and EV is earned value.