If you are new to using styles you should take a little time to learn how to use them. Used properly, dynamic styles give you full control over your project's formatting, enabling you to change the appearance and layout in seconds at any time.
You should define a style for each paragraph type and text format that you plan to use frequently. You can do this as you work and you can change and reorganize your styles whenever you like.
For maximum efficiency only use manual formatting for formats that you are not going to use again. If you later find you want to use the formatting as a style you can always turn it into a style later.
You can quickly turn manual formatting into a style by clicking in the formatted text and then selecting Write > Styles > Create Style from Selection.
If you manage multiple projects that all need to look the same, check out Help+Manual's powerful style repositories. They allow you to share stylesheets between multiple projects and edit the styles for all of them in the same central location. See the Working with Style Repositories chapter for details!
Dynamic Styles (Reference)