Group messages are great for notifying a group of team members.

1. Click people you want to messaging, and Press Ctrl and click to add people
2. Right click on selected people, click 'Send to group' to open the group message box
   
3. Type in message box
   
4. You can also add attachment in your message by clicking the + plus icon
5. Click Send when you’re done
6. All contacts you selected will receive your message at once

Tip: You can even use the 'plus Opt contact' at right upper corner to add members in this group message