how do we create amazon brand story?

we can create a brand story from the “advertising” tab.
1. log into Seller Center
2. click on the advertising tab
3. select A+ content
4. click on Create a Brand story

Click on the Advertising tab then select A+ Content Manager. Then select “Create a Brand Story” and name it then you can select up to 4 modules as you’d like (3-5 recommended), then upload your images and add text.
Submit for approval (it can take up to 7 days for Amazon to review). If they reject it, they will send you a message and specify what needs to be changed. Simply make the changes and submit again.