Static assets are media (images, videos, etc.) or any document/binary files which are used in your site. A Crafter CMS site stores all assets under `/static-assets` directory of Studio. If your site is growing, there is a chance that you and your team will need to upload and manage a huge number of assets. Without a well-designed directory structure, this may lead to authoring usability and performance issues. In this tutorial, we introduce how to use a macro to structure static assets directory. This will help authors upload files to designated folders or even select which folder to upload to without the need of understanding the below form control.