Adding a group to a message A message can contain any number of groups and records. Use this procedure to add a group to a message. In the Message Definition view, right-click a Message and select any one of these options: Select Add Group as Child to add a group to a message or add a second group. Child group is positioned before an existing group. Select Add Group as Sibling to add a group. Sibling group is positioned after an existing group. Verify that the new group is added correctly.