CM Footnotes (CMF) - How To - Add Icons To Footnotes
Adding Icons to Footnotes
Starting from version 1.3.0, CM Footnotes supports dashicons for each footnote.
Finding the Settings
Edit the footnote to which you would like to add the dashicon.
Inside the metabox "CM Footnote - Term Properties", you will find a line with Dashicon information.
Click the highlighted button to choose between the dashicons.
If you would like to remove the dashicon, simply click the red button.