To do this task
If the first month listed is not the first month of your fiscal year, follow
these steps before you set up a forecast:
Click Cancel to close the Set Up Forecast window.
Go to the Company menu and click Company Information.
Select a different starting month for your fiscal year, and then click OK.
Return to the Set Up Forecastwindow (go to the Company menu, click Planning & Budgeting, and then click Set Up Forecast).