Step 1: Open the word document to be modified, click the reference tool in the toolbar at the top of the document page, and then select the Insert Directory tool.

Step 2: Click the option on the pop-up page, enter the number 1 after the title, and then click OK on the page.

Step 3: Click OK on the page again, and the corresponding directory will be automatically generated.

Step 4: If there is any change in the title of the paper when writing the paper in the future, you can click on the citation tool above and choose to update the catalogue.

Step 5: Then check Update the whole directory on the pop-up page, and then click OK on the pop-up page to get a new directory.