Click the left-most of these the New Style tool. At the bottom of the Styles task pane there are three small tool buttons.

Click the small icon at the bottom-right of the Styles group.Here's how you create a new style, emphasizing the setting you need to make: This involves basing your custom heading styles on the existing heading styles. Let's look at the latter way (the easy way) first. There are two ways you can go about this-the best way and the easy way. (These are not the built-in heading styles provided by Word.) She wonders how to get Word to recognize these as heading styles and display them in the Navigation pane. But since Word has far more amateur customers than professional, don't hold your breath for it being done 'right'.Gina created three new styles that she uses for headings in her documents. Making the Style Gallery order drag-n-drop would be the 'user friendly' thing to do. This is a useful tool and it really should be simpler, if Word is to be a truly professional tool. (Changing the priority may be possible through editing the XML code, according to one post, but many people could not make that method work for them.) If the previous post is true, and it appears to be so, that it is 'currently not possible' to change the priority level, that's very sad and another way that shows that Microsoft is not interested in Word being useful for professional writers and designers. But if you add it to the Quick Styles Gallery, it will always be near the front of the list. For instance, you usually only use Title once per document, so it's not really a style you might want in your 'Top 5' list, unless you need to be reminded to always give your document a title. However, if you use some of the built-in styles, those may get bumped to the front of the list anyway. This works if you only use your own defined styles. Since you are identifying your top 6 or 10 styles, reinserting them into the list manually is not an onerous task. Proceed through your list, adding styles into the list in the order you desire. If necessary, remove all styles and add your first choice to be at the front. Remove styles until your first choice style is at the front of the list. The workaround is to make a separate list somewhere, even on paper (!) or in your head, of what styles you want in the Styles Gallery and then remove everything (or nearly) and reinsert them in your desired order.

Style pane in word 2016