The Assumption Types panel of the 2D Simulation tool separates the assumptions into uncertainty assumptions and variability assumptions. All the assumptions from all open worksheets start in the Uncertainty list by default. You must have at least one assumption of each type. When you save the spreadsheet model, the tool remembers the assumption types for the next time you run the tool. The controls for this panel include:
>> — Moves any selected assumptions in the Uncertainty list to the Variability list.
<< — Moves any selected assumptions in the Variability list to the Uncertainty list.
Back — Returns to the Target Forecast panel.
Next — Opens the Options panel.
Run — Runs the 2D Simulation tool if all required settings are complete.
When all assumptions have been sorted into the Uncertainty and Variability lists, click Next to open the Options panel.