What it does It makes better automatic default choices for crew assignments (e.g. "labs need scientists" or "drills need engineers"). It remembers your assignments, so that the next time you launch that ship, it will try to do the same thing.  (No more discovering, *after* you're in orbit, that your gosh-darn rescue ship filled up all the slots and you've got nowhere to put the stranded kerbal!) You can customize the default behavior with ModuleManager config. NOTE: Th