First, click design.
In the list of design, choose banners.
Click the blue button to edit your manufacturer.
Edit manufacturer of your brand
|Your product brand name
|You can choose to set your store to default or not by tick the box
|Do not use spaces, instead replace spaces with - or _ and make sure SEO URL is globally unique
|The image of your brand
|How many order to sort
The brand name in website that you have filled.