For anfisedit GUI, the raw ANFIS structure generation is limited to be based on (a) grid partitioning or (b) subtractive clustering. However, the anfis (training function) can be used to train any raw ANFIS strucure; specially those created by genfis3, or FCM-based structures. For some applications, the result of FCM is better than other approaches, and hence the anfis function, is capable of reaching better performance.
In the following link, you can find a complete implementation, which can be used to compare various configurations for Generation and Training of ANFIS structures: