UDP Multicast client in SIMULINK

Dear all,

I would like to configure the Real-Time Ethernet Configuration so that I can create a Client for Multicast UDP packages. Unicast configuration is working fine. Could you tell me how should I fill the fields Address Source and Multicast address list in the tab Addressing of the Real-Time Ethernet configuration Simulink block? Is there maybe another way that Multicast can be configured?

thank you in advance, Josep.