Find usages for enums via Ctrl + left in IntelliJ

In the editor, select a symbol for which you want to see the usages. From the main menu, select Edit | Find | Show Usages Ctrl+Alt+F7. The usages window shows the current scope. If you want to quickly switch to the default scope, press Ctrl+Alt+F7

Source: https://www.jetbrains.com/help/idea/find-highlight-usages.html