Hi Kathy
The grader report is available to a learner from the course administration menu rather than the My Reports tab which shows reports available to the user from the Report Builder
To make a report available via the My reports tab for a report created with the Report builder select
Site Admin > Reports > Report Builder > Manage Reports
Select the Access tab select the Learner role (and role in any context)
Also check the Content tab and select Show records based on the user and a users own records.
For a detailed description of the settings available go to http://help.totaralms.com/Report_settings.htm
This will let you create customised reports that are displayed in the My reports tab based on the persons roles or other things such as position.
Having said all that I did try to allow the setting the view own grades for the learner role . I clicked on the Grades link in the course admin and this didn't work . The message was that I wasn't allowed to view other users records. This was using the demo site , I'll try and figure out why this happened.
Craig