importing a LaTeX template

[Полина Пруцкова]

Dear LyX experts,
I am trying to use/import a LaTeX template for the ISMIR proceedings from here: 
http://ismir2018.ircam.fr/doc/latex.zip 
<http://ismir2018.ircam.fr/doc/latex.zip> 
It has .sty files but also a .tex, a .pdf and a .bib file.
Which of them do I use and how?
I’ve googled and there are some solutions a couple of years old which seem to 
work for some and not for others. What is the latest wisdom on this?
Kind regards,
Polina