1 Click on the plus icon next to 'Brand Categories' from the left sidebar.

2 From the appeared right sidebar, you can select the category type.

3 There are 3 types of categories :
- Colors - You can add the brand color of a Brand.

- Text - The information about the brand can be added.

- Images - The images assets of the brand can be added....

....on scrolling down, you can find the option to upload the icon.

4 The categories can be edited by double clicking it.