2. After opening, you can see that the small label is the style of Ⅰ Ⅱ Ⅲ ⅴ in the word document. Double-click one of the tabs.
3. After double-clicking, select footnote and endnote options in the pop-up window, and click Select to enter.
4. At this time, in the pop-up footnote and endnote settings, select the format as 1, 2,3, and put a tick in front of the following square bracket style, and that's it.