The concept of brand media is that all users can insert brand media files to their videos so that they follow the brand guidelines of your organization. This can include, for example, graphics following the visual guidelines of the brand.
Brand media files can be seen under the "Brand media" tab in the top left corner of the Icareus Studio Editor tool:

Note: Brand media files can only be deleted by administrator users
New brand media can be added by dragging a file over to this bar and then releasing it.
A loading bar and the preview image of your file will show that the file is being uploaded.
The file will then appear on the Brand Media list.