What have you tried already? They publish a RPM, so I’d think it should be easy enough to install on Neth. From there, I’d suppose you’d use it the same as you’d use any other installation of that client.
i’ve done only a quick test, just installed it to see if worked, I had installed also fuse3-libs
backup seems to work well on a local pbs, scheduled with basic systemd timer, tested recovery via fuse mount, It allowed me to mount the backup and recover some test file…
still to test what interested to me most: backup on remote pbs using token, but i have no time for now…