This is something I think shouldn't be specific to a single app. There's an issue requesting this functionality on the Lemmy GitHub repo: https://github.com/LemmyNet/lemmy/issues/818

If you are interested, it would probably be good to leave an upvote (👍-reaction on the first post in the issue thread) for that issue and maybe a comment detailing your specific use-case and any ideas you might have for how it should work.