To invite members to your group:

1. Click Members in the list on the left side of any page.
2. In the upper right, click Invite People.
3. In the first box, enter the email addresses or Yahoo! IDs of the people you want to invite to your group, one per line.
4. Click Submit Invite.
5. Preview your invite. If you'd like to send it, click Invite People.

You may invite 50 people at a time, up to 1,000 people per day to your group.

Note: Only group owners or moderators with appropriate permissions (the ability to “Invite and add members”) can send invitations.