Tips and Notes
To be able to message groups with a note that can do one of two things:
1. To stay visible until everyone in the group has seen it, and then disappear
2. To stay visible until everyone in the group has checked it off and then disappear.
Sometimes we post a message in group chat but it disappears up the thread and people who come online later can miss it, so it would be good to have the option of a different type of message that doesn't just sit in the chat timeline but persists in some other part of the screen (or at least pinned) until everyone has seen it.
And in some cases we want to post tips that people can refer to a few times, so we don't necessarily want it to disappear as soon as everyone has seen it, hence the idea of a type where people have to manually dismiss it.