Google’s new app, available in the Chrome Web Store, lets you easily access files on a network server from within Chrome OS.
Source: Chromebooks can now seamlessly access Windows network file shares | PCWorld
Although the article focusses on Windows file sharing, macOS computer can use the same networking protocol, SMB. This means that the same extension for Chromebooks can also access macOS file servers.
Be sure to subscribe to my YouTube channel and join your fellow educators on the Eduk8me email list!