Go to WordPress admin > Appearance > GeneratePress. Be sure the license key has been entered. If so, you’ll see a message that says Receiving premium updates.
Activate the Blog module.
Go to Appearance > Customize > Layout > Blog.
You’ll see layout customization options in the left pane.
You can edit both the Archives (Category) pages or Single (Post) pages, and you can navigate between those pages on your site while in the Customizer to see the changes on your pages.
You can also edit Feature Images for Archives (Category), Posts, or Pages in WordPress.
There are many formatting options as well as options for how to display the Excerpt, whether or not to show the post date, post author, categories, tags, comment count, etc.