the botpress support team message me like To display a chat bubble when the user becomes inactive on your integrated website, you can use the Botpress Web Chat widget and configure the autoOpen option to open the chat bubble automatically after a certain period of inactivity but i can't findout how to use that in configuration

It's not Botpress specific, unless you want the actual chat window to open for inactive users, not the chat bubble. You can do something like : **setTimeout(()=>{ YOUR_BOTPRESS_SNIPPET },YOUR_TIMEOUT_IN_MS)**