def EmptyScheduling(TaskMapping, GlobalDII):
    """
	Add one module per module type as key.
	"""
    Sched = {}
    for T, M in TaskMapping.items():
        if M not in Sched:
            DII = M.GetDataIntroductionInterval()
            SharingCapability = int(GlobalDII / DII)
            if SharingCapability < 1:
                Sched[M] = [None]
            else:
                Sched[M] = [None for i in range(SharingCapability)]
    return Sched
