Hello,
01. This is the default template of the demo. But in this demo product, the Extra content added(you can find this field in the product page: https://postimg.cc/7G8cGnys
and applies the HTML block “Lamp extra content”. You need to create an HTML Block and add it in the product settings.
Please read and follow the instructions here about HTML Blocks:
https://xtemos.com/docs-topic/html-blocks-usage/
02. You can import another demo from Woodmart > Prebuilt Websites, but please note that the previous demo content will be removed during the import process. However, your own created content (pages, products, posts you added manually) will remain safe and will not be deleted.
Best Regards