Manually adding a user to User Management

I have a report I need to send to a user which is not part of our domain. I have setup the report and I can add other users as recipients to the scheduled task that emails the report. However I cannot find a way to add this external user to the report.

Questions is - how do I manually add a user to User Management so that i can include them as a recipient?

LANDesk Management Suite 9.5 SP3

Thanks