Recently, In the manufacturing industry, in order to respond to changes of business environment quickly, it is required to realize variable-variety variable-volume production. Along with this, flexible production methods which can produce a wide-variety products on any line are focused on. In the flexible production methods, it is important to make an appropriate production schedule to maintain productivity because bottleneck resources fluctuate. In addition, it is also required to make production schedule quickly to respond daily demand fluctuations. In this research we develop simulation-based scheduling methods that enable high-speed and high-productivity scheduling by providing planning logic that corresponds to the characteristics of the manufacturing line. In this talk, we will discuss planning logic and numerical experiment results especially for manufacturing lines with parallel line configuration.