It's pretty simple: Spin up a VM or container with HAOS; do the initial Home Assistant config; and ensure that the ZBT-2 is assigned to it via USB passthrough. HA will detect the ZBT-2, and offer to add it to your instance with a card in the Devices & services settings. (I think it's more obvious these days, but they've made some changes recently, and I haven't added anything since then to see.)
Once it's added, you can then pair Matter devices with HA. That's most easily done with the Home Assistant app on a phone or tablet, but can be done through the web interface using the Add device button on the Matter page in settings.