I had deployed chirpstack v4 and send unicast message successfully, but multicast functions on v4 still failed, I have the following question need to be clarified.
1, Will chirpstack send McGroupSetupReq MAC command to each device when I add the devices to a such multicast group? Or need to send McGroupSetupReq MAC command manually?
2, How the chirpstack to calculate the payload of McGroupSetupReq message when MAC command sending?
3, Do I need to configure any parameters related to multicast in the device？
Appreciate very much if someone can help?