Well it’s a good news that you’ve solved the demo importer issue by your own. By the way I think you’re asking about the homepage slider so you can modify it by going to Teriz Slider. Then you need to set the category to each slider. After you assign a category then you’ll be able to set the category on the meta option of pages which shows after the content. There you’ll be able to enable or disable the slider or choose which categorized slider you want to load on homepage.
Hopefully this information will help you.
Thanks & Best Regards