With .scss in 'parent_folder/scss' and desired output folder for .css being 'parent_folder/css' go to "Preferences" -> "Tools" -> "File Watchers" -> SCSS
Scope:
Project files
Arguments:
--sourcemap=none --no-cache --update $FileName$:../css/$FileNameWithoutExtension$.css --style compressed
Output paths to refresh:
../css/$FileNameWithoutExtension$.css
Working dir:
$FileDir$
No macros added to anything.