Server hub: audio backend?

I’m looking at the Jacktrip app Hub Server mode. Where’s the Audio Backend setup (Jack or RT). Ken

any feedback on this?

also: when I start hub client with jack audio backend, it seems to handle the startup of jackd? I don’t need to run qjackctl first. jacktrip app starts it? is that right? Does anyone have the default jackd start command line? thanks. (macos - ventura/M2).