All the videos I've seen show it adopted by an existing UniFi site, I wonder if I can still set it up as a standalone device? Hopefully even set up the VPN func

All the videos I've seen show it adopted by an existing UniFi site, I wonder if I can still set it up as a standalone device? Hopefully even set up the VPN functionality to some WireGuard server (which was implied somewhere where it listed OpenVPN & WireGuard, can't find it now).