TAs (and Graders) by default do not have permissions to approve grades. The instructor for the course needs to grant them those permissions if they wish the TAs to have the ability to approve grades in the Stellar Gradebook.
The instructions for giving a TA that permission are:
- Load the Gradebook.
- Click on Settings link (wheel) beside the help and contact links.
- Select the Permissions tab from the settings page.
- Under the TA heading, to enter attendance grades, enable/check the Approve assignment grades checkbox
- To edit previously entered attendance grades, enable/check Change Approved grades checkbox.