Different header on each page

Hello,

I would like to ask you this question because I cannot create different headers on each page.

Indeed, when I try to do so, what I write is echoed on all even or odd pages (depending on whether I am on an even/odd page). I tried this:

"To create different headers, you need to define different page styles (a new page style for each new header).
Format / Style and Formatting / Page Style button / New Style from Selection button "
but without result: the new style I create applies to all pages, which does not ultimately solve my problem :(

In my report, I need to include:
- odd page: header, subsection title aligned to the right
- even page: header, section title aligned to the left
and thus the titles change regularly throughout my report (which is 70 pages long)

I hope you have a tip to give me! Thanks in advance!!!!!!

Lucas