The following chapters demonstrate how to take an existing report, add custom modifications and save it to your Entity folder. The existing reports were created with custom SQL extracts to add TFN formats, calculations and adjust for daylight savings time. For this, the Reserved Numbers Report is considered to demonstrate all the steps to customize a report. It includes how to remove a column, how to create a report for Working or Disconnect TFNs from the Reserved Numbers report, or from the data source RHDB_NAREP that the Reserved Numbers report is based on.