If you're trying to setup Dropbox with network file systems, please note that we don't recommend it as they're not compatible and they don’t send messages when files change. You can find more info about this here.
If you want to have the files sync and be available locally, you can install the desktop app on the devices you need and have a look into LAN sync.
I understand that this may not be the ideal reply you were looking for, but let me know if you have any other questions. Thanks!