The Orange box is the one that is referred to in this thread as 'scan for file additions and updates'. these need to be ticked or that folder will not be updated

The Green box is the section that make serviio update the library all on its own 'automatic update' if you untick this box the library wont update till you click 'force update' button

The Red box is the one that make serviio monitor the files currently in your share folder and changes them as you do (e.g. editing ID3 tags in mp3 files, adding folder.jpg album art file, updating XBMC .nfo file, etc.)