Add Post
Add Blog Posts
You can create a new post from Posts → Add New page.
Add the post title, content, categories, tags and set a featured image (recommended size 750x300) then click the Publish button. As, you can see in the following screenshots.
Gutenberg/Block Editor
Classic Editor
You can see a Banner Configuration metabox area for every post where you can set a banner image and a custom title to display on it as displayed in the screenshot given below.