How to add a line to the manual directory

How to add a line to the manual directory?

1. First select the Word document and double-click to open it.

#2. Secondly, in this interface, select the directory and add a line corresponding to the directory location in the text.

#3. Then in this interface, enter the content to be added.

#4. Secondly, in this interface, click the "Directory Level" button in "Reference".

#5. Then in this interface, select the "Level 1 Directory" option.

#6. Then in this interface, click the "Update Directory" button.

#7. Finally, in this interface, a line was successfully added to the directory.

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