To add footnotes to the text, use MS Word's Footnote functionality.

Do not create footnotes by positioning a normal text paragraph at the bottom of the page, except for footnotes inside a table. In that case, use the style SUPerscript from the IEC template to format the reference to the footnote.

To insert a footnote:

• Word 2010/2007: on the References tab, click on Insert Footnote (1).

  A space at the bottom of the page will open and allow you to directly insert the footnote.   To modify the default values for footnote creation, click on the arrow next to Footnotes (2).

  The Footnotes window (see image below) will display and allow you to change parameters.

• Word 2003/before: Insert > Reference > Footnote
  The Footnote window will open. Normally, you should work with the default values shown below. Then click Insert. A space at the bottom of the page will open and allow you to insert the footnote.