Q. I formatted my paper with footnotes (Chicago) but it turns out my professor wants endnotes. Is there an easy way to change that?

Yes! But only in Microsoft Word, not Google Docs. If you've written your paper in Google Docs, you can export it as a Word document, then make the changes in Word. Here are some useful instructions, both for Mac and Windows.

Caution: if you've been using zotero in conjunction with Google Docs, follow these instructions to avoid breaking the connections between your document and zotero when you export it to Microsoft Word.