Viewpoint - Monitored Systems - Alerts - Session - Alert Action - Group Emails by Session User ?

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Viewpoint - Monitored Systems - Alerts - Session - Alert Action - Group Emails by Session User ?

Hi,

 

Can someone let me know what does this option "Group Emails by Session User" does in the alert action setting ?

 

Secondly, we are using option of "Nofiy Session User" alerts to send email to user and then there is an action which sends email to our administrative users. Is there any possibilty to merge this as a single email where user will be the direct recipient and the administrative users can be added as CC in the email (i.e one alert email rather than two seperate emails)