I think the problem originates in Step 2. I don¡¯t see how to log into my Yahoo group to send an email from it.
?Not just any email, specifically an invitation to join your Yahoo group.
?To do this you must be a moderator (with the Invite and add members privilege) or an owner of the group.
You will subsequently need the privilege to
Add, remove, and change moderator privileges, or be an owner, in order to promote the transfer agent to a moderator (Step 3).