How to change document options?

Hey, thank you for this project. Sorry for the dumb question (I am a LaTeX newbie) but let's say I want to change anything related to the template, e.g. language, document class, list of figures, etc. How would I do that? I noticed there there are many if's in the template but where or how do I set the conditional values without destroying the template?

For example where do I set the lang or lof?

$if(lang)$
  $babel-lang$,
$endif$

$if(lof)$
\listoffigures
$endif$