What we find these days is creation of whatsApp group and adding member more without acquiring the purpose but only to share gossip and entertainment stuff. It becomes more important when it is created by Administration level with the purpose of sharing information with immediate effect. Obviously the head of instruction owns the privilege of being Admin.
Now comes the question that the flow of communication should be one way.
It is Admin originally to be head of institution would dictate and caucus around him will nod even the instructions or suggestions are out of the proportions. If any of the member writes to mind then is it required to be addressed to whom all the time. Does not it for all? If it has to happen belligerently then better to make Broadcast group where the one way communication is only desirable.