Better documentation for private channels

Documentation for private channels is severely lacking. From what I could find, there's only one article that touches on the topic: "How do I set up a Role-Exclusive channel?" (https://support.discord.com/hc/en-us/articles/206143877-How-do-I-set-up-a-Role-Exclusive-channel-). This article doesn't contain "Private channel" in the text, and doesn't appear in the first few pages of results when searching for "private channel".

The article outlines how to create a private channel, but is missing some crucial information, such as what it takes to add new members (both permissions a user needs to be able to add members, and the steps to add members).

Another related issue is that invite links created from a private channel aren't invites to the channel, which is the natural expectation, but to the server. At the very least, this should be documented in relevant articles about private channels and about links (such as "Invites 101" https://support.discord.com/hc/en-us/articles/208866998-Invites-101). Better would be to have the behavior match the expectation, either by not displaying the "Create Invite" control by private channels, or by having the invites created from it add the recipient as a member to the private channel.