A controller of gaming machines that permit wagering on wagering games includes a first memory location that stores a first time-based schedule of gaming actions to be taken by the gaming machines that are located remote from the controller. A second memory location stores identities of first gaming machines. One of the first and second memory locations stores a pointer that links the other of the first and second memory locations and associates the first gaming machines with the first schedule so that one of the first schedule and first gaming machines can be modified independent of and without modifying the other of the first schedule and the first gaming machines. A data transmitter transmits instructions corresponding to the gaming actions defined by the first schedule to the first gaming machines.