Admittedly, this advice isn't always practical, but it's the best way to start if you can. It can be done, but changing styles that are already in use almost always has far-reaching repercussions.
Working with an existing document and all its in-use styles can be troublesome. If possible, open a new document to create your numbered style. Note: This article is also available as a PDF download. To avoid surprises, follow these 10 steps to add a numbering scheme to a style. Unfortunately, that can get you into even more trouble, if you don't know what you're doing. Or you can opt for the more efficient solution and create and apply a numbered style. You can enter the numbers manually and hope nothing changes - lots of luck with that one. You have two choices when faced with the task of numbering headings in a Word document.
