Use a Contact Group to send a message to multiple people - a billing team, a follow-up committee, or to all staff members - without having to add each name to the To field individually. Contact Groups can help streamline your process to quickly send the right message to the right people.
Select Home > Messages.
Click the Create New Group button.
Add a name for the new group.
Click the Add Contacts button.
Select the username(s) you would like part of the group and click Save,
Click Save again.