I’m actually looking to replace Lyx with another program. But nonetheless, I am happy that I finally find a solution to this problem – i.e., use the tex code “\clearpage”.
Two things: 1) I am a bit excessive with my “\clearpage” code, and 2) there’s also the menu option Insert -> Formatting -> Clear Page, which I have not tried. (I used Insert –> TeX Code.)
Reference: http://www.mackichan.com/index.html?techtalk/356.htm~mainFrame