Multicast with Node to gateway and another node

So I have a use case where I would like to transmit data from one node to a gateway and another node. The second node would only receive from the one node that it is paired with. So for example, I have a node that has a light and buzzer on it, when the smoke detector in detects smoke it will contact the gateway to alert me but also send a signal to the node with the light and buzzer to turn on. Is this possible with the Multicast example?