Sorry! Meant to report this on the Open Beta forum.

When going to the report button at the top right of the Quick Menu or Main Menu, you can view all of your in-game reports.

All of the tabs on the left are not properly sorted. Clicking Users, shows reports for avatars while displaying the "Users" heading. Avatars says avatars, but actually displays instance reports. Worlds, works as expected. Groups shows user reports while displaying the "Groups" heading. Instances gets directed to Avatars.

There is no way to view reports for Groups, unless you're viewing the "All" tab.