The LLBLGen Pro designer supports enum types for field types. To be able to use enums inside the designer, the designer must know about them. The way to do so is by defining .typeimports files. These files define where the designer can locate enum types. To force the designer to re-scan for .typeimports files, right-click the Project node in Project Explorer, and select Re-scan for TypeConverters and .typeimports Files.
Once the designer has loaded the enum types defined in the .typeimports files, it will create type shortcuts. These type shortcuts are used to specify the type for a field. You can change these auto-created type shortcuts in the Project Settings.