Just want to give the exclaimer I have not done this before but I believe this is the way it works.
The USB configuration is done for setting it up individually I believe. Exit out of the wizard (Ctrl & esc) and click icon on the left hand side. Select system setup then admin policy tool. This is the same UI that we get in WMS but you have to set them up individually and then you can export the config with a thumb drive and then import into another thin client. I do not use it this way but that’s the way it’s intended to work I believe. Sorry if there’s any typos or anything trying to do this on a mobile device.