You can mute your bot. Just press the Mute button in the right upper corner of the FAQ Editor. In the mute mode the bot will process the user queries and log the results but not show any replies to users. You can see the logged results in the Label tab.
You may wish to use the mute mode before you publicly launch your bot, for quality testing purposes, or whenever you want it to stay silent, e.g. when live agents are on duty. You would unmute it at night.