You can also edit the footnotes and endnotes according to your own needs after inserting them. In this way, you can use not only numbers, but also letters and symbols. You can also specify the digit you want the numbering to start with. To access these configuration options, right-click on a footnote or endnote and then on the "Notes Options". Also, you can change the font size with the "Styles" option.
To delete a footnote or endnote, just delete the superscript after the corresponding paragraph. The numbering goes up one unit and adjusts the next note. Tip: if you want to see all footnotes or endnotes at once, click the button? Show notes? to have a complete view..