If you post such a question indicating such a link, that means your images are not anchored, functionnality the person who made this video seems however to ignore! … if not, forget the way shown in the video! (^/) The Jedi
Hmm, and what is the usual way to create an index of all linked images?
I tried it again (latest ID version): but it just looks like it might be possible to add a new "Querverweis" directly to an image. After "OK" the entry doesn't appear in the list! I do have to work with text frames as described in the linked video.
And there are no instructions e.g. on the help page: