specify a config file to run multiple bro instances on one server

I am trying to figure out how I can run multiple instances of bro with each of them using their own set of bro scripts.
I don’t really see a way to specify a config file when running it with broctl


I assume you are using broctl. If that's true you can load specific scripts with Bro prefix mechanism (it's already enabled with broctl).

Drop a file in your site directory named worker-1.local.bro and it will be automatically loaded by the host named "worker-1".