I have a document with hundreds of footnotes and I want to select all the footnotes at once to do Find/Change. I want to find all the places where there's a double space (by mistake) and replace the double space with a single space. InDesign is only allowing me to select one footnote at a time. How can I select all the footnotes in order to do a Find/Change on all of them?
You cannot select all footnotes in any way.
However, do your Find/Change inside the footnote paragraph style only.
Same as before: Click inside the Find Format box at the bottom of
Find/Change, and select your footnote para style.