Clear chat history.
Basically if two people want to have a conversation and some of that conversation would desired to be private, clear the chat history. (or just a way to have a sub conversation that clears history like incognito mode)
I don't like sensitive family discussions to stay on screen: I want to clear them.
Chat history clearing option is a MUST!. It is displayed as default and that leads to an unnecessary text pollution.
There should be "show / hide conversation history" option in view settings.
Also there may be an option like "display history chat with this user"
And there is a need for an option to permanently delete the history for the pivate issues.