Got it, lets assume you have a field called OS which is enumeration type and it has next values: IOS, ANDROID
And you’ve created your own field type inside plugin, for example type: Phone Brand, which also acts like an Enumeration type and you want to render specific values when you select OS value. For example if you select IOS you want to render iPhone X, iPhone 11, iPhone 12 in your custom field
Did I get it right?