Where's Debug mode and why can't I quit?

I'm trying to clean up my Dock on my MacBook and I've seen the posts telling us to just quit the Hazel app and let it run in the background. I've tried right clicking on the dock icon, clicking "Quit", but nothing happens. If I go up to the menu bar and click "Quit" from the drop down or use Command + Q while it's the active app, it quits. Also, I tried to find where the option is for Debug mode, but couldn't find it. I saw the post regarding debug mode, but the steps listed there are for old versions of the app.