If your table has more than one group, you can delete a group. There must, however, always be at least one group in each table, so if you only have one group, the Delete button is disabled.

To delete a group

1. Click the table to reveal the adorners.
2. Click the expand button to the right of the group that you want to delete.
3. In the upper right corner of the expanded menu, click the Remove Group button.