How to modify this statement to get a url for pt_BR?

I'm working with the Academy theme done by the gringos and would like to know how to modify this statement to be able to replace register with cadastrar and thus get a url in pt_BR .

'register' => array(
    'title' => __('Registration', 'academy'),
    'name' => 'register',
    'rule' => 'register/?',
    'rewrite' => 'index.php?register=1',
    'position' => 'top',
    'authorized' => false,
), ...

Do I have to change only at this point or at other points in the theme, the call might not work?