Enabling ‘Autoplay’ will start your live stream automatically once a viewer clicks on your page with the live stream. They do not have to press ‘Play’ for it to start. Note that this may not work on all browsers due to different reasons.
Enabling ‘Start Muted’ with ‘Autoplay’ together will increase the chances of the live stream starting automatically. Check out this article for some of the reasons why AutoPlay isn’t always possible.