If you're looking for an OpenCore Configurator with an interface and much better (IMHO) than the current one, I highly recommend this one. Much, much, better than the Mackie app as that tends to add unselected data if you're not careful. This one is very newbie friendly and easy to understand, it makes updating your OC config.plist a doodle with a builtin OC Validate for checking your selections before saving.
I don't use these apps as I prefer Plist Editors but I do try them all to see what benefits they offer and if they are user friendly for late starters to OpenCore.
This Configurator is available on GitHub with the usual notes on it's various functions and operation. I have attached it here, to install just drag and drop it into your Application Folder, you may have to give it permission to launch when opening.