As a researcher I would like to be able to create finding aids/PDFs of sections of a catalogue

We have some huge finding aids on ArchivesSpace (e.g. Cambridge University Archives https://archivesearch.lib.cam.ac.uk/repositories/2/resources/86) where PDF finding aids of the complete collection are huge and unmanageable.

On the PUI users would like to be able to download a finding aid for part of a collection from levels below the resource description. The finding aid would include the archival object record selected and all it's children/grandchildren.