Know where to take notes: your paper uses a certain point of view in a certain material; There is a term in your paper that comes from a certain document; Unfamiliar but important people, and so on. These situations need your comments.

Enter a footnote where you want to comment by clicking Reference, and then finding Insert Footnote. We chose to insert footnotes.

At this point, our cursor automatically jumps to the footer, which is where we insert the footnote. We see a small "1" in the text and footer, which is the serial number of the footer.

If you think the footnote serial number is in the wrong format, you need to click this position to expand the footnote dialog box. Then select the numbering format. Click on the small triangle on the right to expand and see that there are many formats to choose from, and choose according to the format requirements of the paper.