The correct operation method is as follows: 1. The first step is to open the related Word document, and then enter the title.

2. Step 2 After completing the above steps, select the title and click Format Title.

3. Step 3 After completing the above steps, click the "Directory" button in the "Reference" option.

4. Step 4 After completing the above steps, click the "Custom Directory" option at the bottom.

5. Step 5 After completing the above steps, you can set the format, and then click OK.

6. After the completion of the above steps in step 6, the desired results are obtained.