If you’re an owner or a moderator with the ability to add, remove, and change moderator privileges, then you can assign additional privileges to one of your co-moderators. Here’s how:

1. Click members at the top of any page.
2. Find the member you want promote (!) and choose "edit privileges" from the "Moderator Actions" column.
3. Click Convert to Moderator or Owner. If you clicked Convert to Moderator, select the moderator powers you wish confer on the member.
4. Click Save at the bottom of the page.

You can set the following options:

• Approve pending posts
  Gives the moderator the right to approve pending messages and photos.
• Approve pending members
  Gives the moderator the right to approve pending membership requests.
• Invite and add members
  Gives the moderator the right to invite people to the group.
• Remove members and reset bouncing members
  Gives the moderator the ability to unsubscribe members and to reset bouncing members.
• Ban and re-admit members
  Gives the moderator the right to ban members from the group.
• Add or remove moderators and change these privilegesgives the moderator power to make members moderators, or to change the privileges of existing moderators.
  Note: A very important responsibility that should be granted only to people you trust.
• Change group settings
  Gives the moderator the power to change settings for the group. Another very important power that should be granted carefully.
• Delete this group
  Gives the moderator the power to permanently delete the group. Since this can only be reversed by Yahoo! Customer Support (and only within 120 days of a deletion), another power that should be granted very carefully.

To remove all moderator privileges, click Convert to Standard Member. This reverts the member to a regular subscription.