Here are the steps to add this button:

  1. Go to Settings
  2. Bot information
  3. Activate the option "Show a button to restart the conversation".
  4. Customize the text to be displayed if needed
  5. Don't forget to click on "Publish".

Warning: this button will of course only appear on the web version of your chatbot. For Teams, Hangout and other applications you will have to go through the persistent menu directly!

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