2. Then click the right mouse button on the serial number to be modified (take 20 as an example here).

3. Then, right-click the selection box and select the last serial number in the table.

4. Right-click the "Auto Fill" button in the lower right corner of the selection box and select the fill order in the pop-up menu.

5. Click the right mouse button to fill in the sequence, and automatically fill in the serial number.