1.Select the Outline tool 
from the Annotations toolbar.
2.The cursor will change from the mouse pointer to a small cross hair cursor (+). Click and hold the left mouse button while you drag to create a rectangle outline around the area on the page where you want the heading to be.
3.Release the mouse button when you are done.The heading will be shown outlined with a red dotted rectangle. This rectangle is shown only on the screen to make seeing the heading annotation easier; it is not included when the page is printed or used to create a PDF, TIFF or other type of file.
The new heading annotation has also been added under the Headings section in the Outline view. If you cannot see the Outline view, click on the Outline tab, the tab with the book icon, in the Navigation view to bring the tab forward.
4.The heading annotation defaults to Heading Level 1 and Heading Text as Heading Text. With the annotation selected, press the Enter key or select the Annotation Properties (
) toolbar button to edit its properties.
5.The Annotation Properties dialog will appear showing the properties that are available to be edited for the heading. If you change a property, the Apply button in the lower right corner will become enabled. By clicking this button, the changes you have made will be temporarily applied to the annotation on the page. To keep the changes, click OK. Clicking Cancel will abandon the changes and return the annotation back to its original state.
