The Nop JCarousel puling is added in the HTML with widget zones. In the Razor view files, you have specifically defined widget zones in which you can add a markup and in the plugins administration, you have a dropdown with the major nopCommerce widget zones. In the plugin files, you can find a SupportedWidgetZones.xml file where you can add a widget zone which is not included in the dropdown.
I understand that. I was trying to not change the home view and use multiple HTML Widgets for a bootstrap grid but TinyMCE keeps stripping out HTML that's not open or closed. Having a shortcode would solve that issue so I could have 1 widget with all my HTML code.