I've NO idea what your NAS is so I can't comment.
If you have a Linux friendly NAS then we have have a lot of options available
Sorry, you are right...let me clarify:
I am looking for a way to manage ressources in Kodi (from where the "update library" gets the information what is available). I can do that on the TC screen using either my remote control or (maybe) the android app....however, when typing URLs and IPs and stuff (to attach NFS or external harddisks), I'd rather use a keyboard and a mouse (or at least keyboard).
In my case the data (files) are on a NAS which I want to mount/add as NFS ressource...and that is a little tedious doing by hand with a remote control.
Additionally I'd like to be able to delete movies and shows from the database (like when I am on the tv and choose the show and then delete it), preferably also from WebGUI or such. I have not yet found an option to do that.