To me this sounds unnecessarily complicated, but maybe I am missing something?
Do you want to add e.g. a folder on your network share (that is added as a source) to the home screen?
Then just do this:
- Browse to the folder (under videos/files)
- Highlight folder and Context menu; Add to favourites
- Go to Settings/Appearance/Skin-Settings
- Customise Home Menu
- Choose Add
- Choose Shortcut; choose Favourite and the folder you previously added to Favourites
As Hithcher mentioned, if you d this you will also see what the command should be.
Personally I use smart playlists for such things instead, but sometimes it´s not optimal.