1. Click Settings on the left side menu;
2. Choose the Worksheets option;
3. Use the tab Not Evaluated or Evaluated to find the worksheet on the list below - you can use filters such as teams, spaces, sections, contents or simply searching for the user's Name;
4. On the tab Not Evaluated, click Evaluate; for evaluated worksheets, click the numbers (points);
5. On the top right corner, click delete worksheets;
6. To permanently delete it, click Ok.