Hotfix RO94932 resolves this issue with the Reviewer Activity Report and displays the results at events level.
1. Download and extract Reports_15.0_HF085.zip.
2. Apply Reports_15.0_HF085.msp to the machines where iConsole is deployed.
3. After applying the hotfix, restart the CA Data Protection infrastructure
a. Further installation details can be found in the CA Data Protection 15.0 Platform Deployment Guide chapter, "Applying Hotfixes".
b. The following files will be updated when applying Reports_15.0_HF085.msp:
system\std_rptinst\Common\MSSQL\Drilldown\Ev4Drilldown_1_51.sql -- 9-Mar-2017