I think the order in https://dev.liferay.com/en/discover/portal/-/knowledge_base/7-1/staging-content-for-publication is wrong.
This section ends with "In the next section, you'll jump in to see how to enable staging.", however, Enabling Staging is only the fourth section.
Probably the correct order would be what we have here:
In the mentioned structure like view, there is an extra What's Expected from Staging topic, but it is missing from dev.liferay.com.
Let me know if I should open an other ticekt for this.