How do I set a style to be 'Heading' in Word 2013?

I have created my own custom heading style in Word and want it to appear under Headings in the Navigation pane. How can I do this?

1. Right click on your style in the Quick Style gallery and choose Modify

2. Click Format down the bottom left and then on Paragraph

3. Change Outline Level to reflect what heading level you want the style to be. For example Level 1 matches Heading 1, Level 2 matches Heading 2 etc.

Right click on the style you want to be seen as a Heading in the Navigation. Click on 'Modify' Look for 'Style based on' and choose any Heading (e.g. Heading 1, Heading 2, etc.) Customize to your liking. You'll see the new style become a Heading in the Navigation.

Good luck :)