Before you run a simulation or after you stop it, you can use the Single Step command to watch the simulation process generate one set of values (a trial) at a time for the assumption cells and recalculate the spreadsheet. This feature is useful if you are trying to track down a calculation error or verify that the values being produced for the assumption cells are valid.
To observe an individual trial:
, on the Crystal Ball toolbar or Control Panel.
, to run one trial of the simulation. Click the button again to run another.