Working with Markups > Annotations > To Create an Annotation
  
To Create an Annotation
1. On the Home tab, in the Insert group, click an annotation type and select a subtype. The pointer becomes an annotation pointer.
2. Place the annotation using the corresponding placement method. When you create an annotation that includes a label, the Annotation: Edit dialog box opens.
3. Type the text for the label and select the Font Size, Font Color, and Background Color, and then click OK.