Sorry, but you missunderstood my explanation.

I need to change the name of the Group not any details from the members.


Let me clarify with an example …

I have a group ABC and it has email address ABC@X.COM.

Now I need to change the GROUP name ABC to XYZ and the GROUP's email address from ABC@X.COM to XYZ@X.COM.


I know how to change the name, but how can I change the email address