How to help Hazel find my Photos library on SD card

I'm trying to create a rule to get Hazel to import new photos into my Photos app. But it can't seem to find any albums, even though they exist. I've got my Photos library sitting on an SD card and I'm wondering if that's the issue? Hazel is looking somewhere else? How do I point Hazel to where the .photoslibrary file is? Thanks!

In Photos, go to its preferences. Under the Library Location is a "Use as System Photo Library" button. If that button is enabled, you'll need to click that so that Hazel can see the library.

Aha thanks! I was looking in System Prefs for that setting.