You create a page or blog post with wordpress as usual. You probably use a special editor such as Elementor or WPBakery or the Gutenberg editor integrated in WordPress.
You proceed as usual and integrate the required Lightning Paywall element with these editors.
You can also integrate a shortcode command into the corresponding pages.
If you can create a page or a blog post, then you are also able to integrate the WordPress Lightning Paywall.
For instructions on how the Lightning Paywall elements work with the respective editors, see the post: Add Lightning Paywall to your blog Post.