2. Click the Excel option button.
3. Click the "Save" menu on the left.
4. Click the box in front of "Auto Save ..." and tick "√".
5. Set the time for automatic saving in the position shown in the figure.
6. Set the location of the automatically saved file in the box next to the "Automatically restore file location" option.
7. Finally, click the "OK" button in the lower right corner. If there is a power failure and it is too late to save, you can find the file in the location set in "Automatically Recover File Location".