On the older version of Manychat there was no need for a trigger event to start the Welcome Message.

After pressing ‘Get Started’ you could select the Welcome Message as the ‘Start’ of the automation. With the new version of  Manychat you seem to have to first ‘trigger’ an event. How do I set the welcome automation without a trigger event, and if I have to use a trigger, which trigger should it be to start the Welcome Message after the ‘Get Started’ button is pressed which is performed as part of the ‘Greeting Text’?