In Connect Copy mode, the main machine's default [Copier / Document Server Features] is applied to the sub-machine.
However, the [Auto Tray Switching] and [Connect Copy Key Display] settings are applied to each machine separately.
If you configure the buzzer volume settings under [Sound] in [Screen Features] to set the buzzer sounding for [Operation Completed], only the main machine's buzzer sounds when a copy job is complete.