If you need to fix Meeting Attendance object settings:

1. Click the Setup gear (upper right) and select Setup

2. Click the Object Manager tab and select the Meeting Attendance object from the list in the central panel

3. The left-hand vertical menu should be on Details but if not, select it

4. Click Edit (upper right)

5. Correct mistakes, referring to Steps 70-77

6. Click Save

7. Re-grade by using the App Launcher to open the Grader App and follow instructions to run the scoring routine again and then be sure to reload the page to see the updated error list & grade certificate