You can perform the following actions on a group that you created. These actions appear when you right-click the created group.
Compose Mail To. You can send an email to all the contacts in a group. When this option is selected, the compose tab displays with the email addresses of all the contacts in the To field.
New Event: Creates a calendar event on the contacts of a group. When this option is selected, a New Event tab is created and all the contacts of the group are added to the invitee list. For more information about creating events, see How Do I Create an Event?
Rename Group: To know more about how to rename a group, see How Do I Rename a Group?
Delete Group: To know more about how to delete a group, see How Do I Delete a Group?