Click the Discrete icon or the Forecasting tab or select Forecasting>Low Volume>Discrete on the Navigator context menu to use simple exponential smoothing model and base confidence limits on one of the discrete distributions (Poisson or negative binomial).
The following modifier specifies a discrete model:
\DISCRETE. Use a simple exponential smoothing model and base confidence limits on one of the discrete distributions (Poisson or negative binomial). This option is used to obtain better estimates of the confidence limits for low volume integer series (typically with many zeros).