According to an aspect, there is provided a method for managing elevator cars in a multi-car elevator shaft system. The method comprises determining, by an elevator control entity, the optimum number of elevator cars for a given time of a day in the multi-car elevator shaft system; and commanding, by the elevator control entity, at least one elevator car into at least one elevator car storage or back to service from the at least one elevator car storage based on the determination, wherein elevator cars in the at least one elevator car storage act as standby elevator cars for the multi-car elevator shaft system.