[NTG-context] getting modules working on luametatex on Mac Catalina

Thanks to Otared Kavian’s instructions I have luametatex working on my Mac OS 10.15.2 (Catalina). I have a file making use of the annotation module but it fails and the log says that it can’t be found (the texmf-modules folder is empty). What command do I need to download the modules? Thanks for any help, Charlie