There are a couple options for editing your news post. If you are needing to edit the actual content within the article (text, feature image, etc), you will want to click 'Edit' or 'Edit with Divi'.

To change things like the slug, category, tags, allowing comments, etc use the Quick Edit option.

If using quick edit:

It will open up a menu with a bunch of different options for editing the post.

If you make any changes, be sure to click 'Update' in the bottom right corner to save your changes!