depends on the device.but you should be able to plug it in and it shows up in usb hardware and you can pick vendor id. If you like using specific ports you just plug something in to that port and enable only that port being redirected.
Hi. sry for late reply. proxmox 6.0 works smoothly. follow this guide https://forums.plex.tv/t/pms-installation-guide-when-using-a-proxmox-5-1-lxc-container/219728
YEP! proxmox 6.0 have way more up-to-date packages because of debian buster :) just GVT for coffee lake now :)