This example adds an annotation group, sets the annotation type, sets the background color of the annotation, and then draws the mark. (Annotation groups are not actually created until a mark is drawn in the group.)
Private Sub cmdAddGroup_Click()
ImgEdit1.AddAnnotationGroup "Accounting Dept"
ImgEdit1.AnnotationType = wiTextAttachment '10
ImgEdit1.AnnotationBackColor = vbYellow
ImgEdit1.Draw 10, 10, 150, 100
'The user must manually enter the text on the attachment
End Sub