To address your concerns:
If you're unable to view "blank page" and "Web address/link" under the "Pages" link on your blogging platform, you may need to adjust your settings or explore different options within the platform's interface. Look for settings related to page creation or customization to enable these features.
To add posts under particular pages on your blog, you can utilize the categorization or labeling feature provided by your blogging platform. When creating a new post, you should have the option to assign it to a specific category or label. By organizing your posts into relevant categories or labels, you can effectively group them under corresponding pages on your blog.
For more specific guidance tailored to your blogging platform, consider referring to the platform's documentation or seeking assistance from their support resources.