To change historical averages of accounts:
From any Strategic Finance view, select Accounts, then Account Input Status.
Under Historical Average, select an option for the account row:
The default historical average is taken from the Years for Historical Average setting in Time Periods. Applied to all accounts in the model, unless overwritten here.
Includes all time periods in the model in the historical average.
There is a number for each time period in the model. Select one, and the historical average includes periods from the beginning up to that number.