For each Help Center section, you can enable or disable access for the Usergroup entirely.
This is different from using the Help Center Editor to enable or disable sections altogether. If you disable access to a Help Center section for the Everyone Usergroup, it won’t be seen by any Users, but it will still be visible to Agents.
For each section, you can enable or disable a Usergroup’s ability to rate content and submit content visible to other Users, such as comments and feedback items.
For permissions that involve User visible content, you can also choose whether or not to require Agent validation. This means that Agents have to approve content to check it is not abusive, spam etc.
Incoming comments in need of approval for Guides, Knowledgebase, News, and Files will be shown under Comments in the Agent interface:

And in the Community tab, they are shown under Community Workflows:
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