To make the change, you change the underlying Office 365 Group email address. You'll need to have Global Admin rights to do this. Here is one example of how to do this, there are probably many others: -office-365-group-or-team-email-address/
To make the change, you change the underlying Office 365 Group email address. You'll need to have Global Admin rights to do this. Here is one example of how to do this, there are probably many others: -office-365-group-or-team-email-address/