If your blog displays undesired elements on the page, for example the title and summary of the latest blog posts are repeated below your full blog posts, then you'll need to apply a different layout that doesn't contain these elements, to your group.

If the issue is you don't want your blog posts repeated then you'll need to apply a layout that doesn't contain the 'article list' component, so instead the layout just contains an article component displaying the group homepage article.