Group discussion was held to discuss the main working mechanism of the Okonomiyaki machine. As the main action involved in making okonomiyaki was the flipping of the Japanese pancake, two possible working mechanisms were raised, which was the Happy Call method and the Robotic Arm method. Both mechanisms had their strengths and weaknesses. The Happy Call method seemed simpler and more straightforward, however, the Robotic Arm method provided an ideal level of complexity for MnT.