Assets are elements that we want to include within our components. They could provide extra information about it, like for example a pdf with intructions or a showcase video, or they could be used for building the components, such as scripts, 3d models, etc.
To include assets in your component, click on the Add Asset button, located at the top-right corner.
Pick a name for the asset and click on OK.
A new empty asset will be created. Finally, click on the upload icon to upload a file and associate to that asset.