The viewing period allows you to manage the volume of historical data stored and the relevancy of results returned, the user can choose to limit the periods for which they view the results for.
How to apply Viewing Period filtering
To set the preferred Viewing Period, the user can simply
use the filter that appears at the bottom of the Summary
Analysis section of the screen for Accounting Rules, Trends, Exceptional
Values or Unusual Combinations, under Analysis
Results.

Use the drop-down box to select the preferred viewing period. Select either number of Months or Date Range.
Set the period for the specific analysis that is being reviewed, or apply it across all analysis views by checking the box Apply to all views.
When you are finished, click on the Apply button to save; or use the Cancel button to discard it.
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