I can not change published posts. But, I can write new posts.
I can use the below methods to do so. But, the classic editor is recommended. However, it will eventually be discontinued as it was replaced by the block editor. Though it is used for the Brain Launch sites, the WP Bakery method is not available here.
When my post is done it will be submitted for approval by the appropriate staff.
How to create a WordPress post with the block editor:
https://wordpress.org/support/article/wordpress-editor/
How to create a WordPress post with the classic editor:
How to create a WordPress post with the WP Bakery plugin:
https://wpbakery.com/video-academy/wpbakery-page-builder-tutorial-for-beginners/