How to hide the subreport rdl files from users in SharePoint?

I have a main report "New Items" with 5 subreports "Sub1" through "Sub5" all within a project "Project1".  I deploy all the reports to the same TargetReportFolder on SharePoint.  When a user goes to the SharePoint site to run the report, they see the main report along with all the subreports which is confusing to them.

How do I hide the subreports from the users so they don't click on them?  I've read a lot of forums mentioning "Hide in List View" but I do not find that option in SSRS 2008 R2.  Is there a properties setting to hide the subreports that I'm not finding?

Thanks.