Using Multi-User installation, is it possible to use multiple autopsy clients to speed up analyses? Each client runs different modules.
Multi-user isn’t really set up to do that. You could potentially do it manually by only selecting some ingest modules to run at first and then opening the case in progress on another client and running the other modules, but I’ve never tested it and I feel like it could miss data.
You are looking for the Automated Ingest feature which is an experimental feature Autopsy User Documentation: Automated Ingest