When your word document contains footnotes and endnotes, you are able to do the following 3 things:
1. Convert all footnotes to endnotes;
2. Convert all endnotes to footnotes;
3. Swap footnotes and endnotes.
Please follow the steps below to convert all footnotes to endnotes (or check how to add footnotes here):
Step 1: Click anywhere in the word document;
Step 2: Click the "References" tab from the ribbon;
Step 3: Click the right-bottom corner in the "Footnotes" section;
Step 4: In the new window, check "Convert" button;
Step 5: Select the convert type, click "OK" and close the "Footnote and Endnote" window.