Lock comments / replies on posting to a Channel
When posting an "announcement" type post to a Channel allow poster to select "disable comments or replies"
Allow a poster, at any time, to lock comments on a post.
Andrew Taylor commented
Yes! We've used moderation to allow students only to post replies and make a new post for discussion for that day to keep things contained (Teams does a poor job with the typing box at the bottom being a new Post rather than a reply and students take training not to do a New Post when they think they're replying). Students are replying to a previous day because the ordering changes on the page based upon comments. I want to be able to lock down and "archive" the previous days' discussion.