Install this plugin to use with elements that Atomic Fusion provides.  Some elements like repeating groups, graphs, charts, etc. require "Dynamic Data".  
To supply dummy data to a Repeating Group, Chart or other element, simply use the 'Get data from an external API' option after clicking on the blue 'Dynamic Data' button. Here you can pick the type of data and the corresponding API call that this plugin offers.

This plugin will make API calls to populate data that is required in these types of elements.  

Once you've tested your element, you can go ahead and remove the dynamic API query and use your own database queries to render your own data.  You can uninstall this plugin prior to deploying your app to production as well.

You can also use this plugin outside of the Atomic Fusion service / extension and simply use it to generate mock data for any project.