I am trying to change the running head for each section of a long manuscript (using different running head on even and odd pages). I do the following:
click view-header/footer
click format-document-layout
There i check off "headers and Footers" boxes for "different odd and even" and "different first page."
I choose, apply "this section."

But instead, the change applies to the entire document.

What am I doing wrong?

Extremely grateful for any suggestions to fix this!