I would like to have a "Persistent" option in the notification options. I don't see Hazel in the Notification Center on the Mac, but assuming it adheres to standard notification APIs a non-persistent notification would then be a "Banner" and a persistent one an "Alert".
Are you on Ventura? If so, it's a bug on Ventura that Hazel does not show up. There is no fix at the moment but I suggest contacting Apple to pressure them into fixing it.
Thanks for your answer. Apologies it took so long; I guess I had expected a mail notification or I somehow missed that. Anyway, yes, I'm on Ventura. I have no trouble pressuring Apple on it, is there a bug I can vote on that you're aware of?