How can i use the new native adsense in article ads

Hello guys.. i want to use the new native adsense ads tha allowsme to use new ads tha offer a better experiencs for user as inrticles ads infeed ads and content related ads..

How can i insert those type of ads?

I know that for example if i just paste the code inside an article this couls allowme to offer that type of ads on the article, but this was just in that article and not all the articles... obviously this could be a very difiicult thing if i have many articles..

Hope can helpme on this.

Best regards.