1. The option can be invoked from search service views or newsgroup views.
Note: Auto collections are designated with yellow icons automatically grouping related files (don't confuse with par2/rar etc. sets).
2. Optionally select destination folder (or use "(Auto)" option to download into the folder defined in Properties->Newsgroups
3. Files from each collection will go into its own folder. For misnamed files it means not waiting for the folder downloads to be exhausted.
4. When search service results are imported as a custom collection - the option can be invoked for the custom collection entry achieving the same result