Mujnu, generally speaking, any empty fuse locations will mean that that fuse is not relevant to your individual car, if I remember correctly, some locations might even not have the contacts fitted in them to accept a fuse.
On the Skoda forum right now (
www.briskoda.net ) in the Fabia section, there is a thread with a picture of fuse card and fuse box, and on that one there are quite a few empty spaces, though in the main, that illustration from Skoda (I think) has them "crossed out" to avoid confusion. I can't remember my wife's Polo 9N having any crossed out on the fuse card though!