Your website contains blogging capabilities. You can create new blogs, edit blogs, delete blogs, and feature blogs.
Login to your website > Dashboard > Composer > Write
Add in a new blog entry
Save & Publish
IMPORTANT - Blog Featured checkbox. You can only have one featured blog. If you have more than one featured blog, only one will show in the featured article area, the other one won't show at all. Make sure to go to the old featured article and untick that checkbox when you have a new article you want to feature.
EDIT Blog - can be done via the page itself.
Remove featured article attribute - search for "Sitemap" in the Intelligent Search box.
Expand "Blog" section. Click on blog page. From contextual menu, select either Edit in Composer" or "Properties"