How to designate beginning of new chapter

Using LibreOffice Writer version 4.4.3.2, Windows 7, English

I want to create a multi-chapter document with footnotes restarting “per chapter,” but I don’t know how to tell LibreOffice how to identify where each new chapter begins. I have read multiple threads attempting to solve this problem, but virtually all of them just assume I already know how to manage chapters. I need a very clear, simple run-down of how I can tell the program which blocks of text count as their own chapters.

Please note: I have already tried the fix where you set each chapter as a different level in format/paragraph/paragraph style. All my chapters are set to different levels, but the program still numbers the footnotes continuously even when I set footnotes to “per chapter.” I assume that means the program is drawing on some other kind of information in order to determine where chapters begin and end–I just need to know what information that is and how to alter it.

Thank you so much for your answers. I am not very tech-savvy and completely at my wits’ end.