I would like to have a second person as moderator to my group how do I do this?

Question

make a co owner of the group

Answer 1

Here you go:

http://help.yahoo.com/l/us/yahoo/groups/...

http://help.yahoo.com/l/us/yahoo/groups/...

Answer 2

This is how to add another owner to your group.  It will not affect your own Owner status.

Sign in to your group and click on Members.  

Locate the member that you want to assign as Owner.

Click Edit Membership located underneath members name.  

Click Change to Owner.

Click Make Owner.

Click on Save Changes.