The question was how to share bookmarks from existing personal diigo library.
If you click Edit, you can then share with group - and add a group comment. NB, if making new bookmark, there is option to share with group and you then get personal and shared bookmarks - neat!
If you click Edit, you can then share with group - and add a group comment. NB, if making new bookmark, there is option to share with group and you then get personal and shared bookmarks - neat!