Since there aren't any other replies here, for my future self I'll share that you can run sudo eslogger exec and look for the responsible_audit_token key to get the parent pid.
hepting_airbnb
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I'm curious what you do with Apple Configurator once you download the IPSW for the Big Sur Beta (UniversalMac11.0<hash>_Restore.ipsw in my case)?
Do you need to connect the machines with a particular cable?