Currently, only Group Owners and Head Admins can send out Group Bulletins to members.
The bulletins will be sent to all the group members.
These messages will appear in the 'Group Bulletins' folder in your inbox.
Here's how to send a group bulletin:
1. While in the group, click on 'More Admin Tools.'
2. Click the 'Send a Bulletin' link from the dropdown menu.
3. Enter the title and message you want to send.
4. Click the 'Send Bulletin' button.
Keep in mind you may only send a bulletin once per day.