Auto-Merge will check that a pull request can be auto-merged every time an impactful change happens to the pull request. For example, a new task completed, a new approval, a finished build or a change in the title. However, it will never do so less than 20 seconds after the creation of the pull request, leaving you a time window to change the pull request title (or delete the pull request) if you accidentally used the wrong one (see “I accidentally create a pull request in the wrong category, can I do something about it?”).