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 [Panel Key Sound] in [System Settings] and select [On] under [Job End Call], only the main machine's buzzer sounds when a copy job is complete.