This feature allows you to customize how your Convos will look in your bot's Main Menu:
If you leave Show info about my most recent convo checked, it will auto-populate with information from your last Convo image and convo title like this:
This way your menu item will stay updated without you worrying about it.
The menu item will only appear once you have at least one Convo that's not hidden.
You can always decide later to uncheck this option and customize it manually.
If you want to preview how it will look to your customers, simply hit the Preview button. You will get redirected to a the messenger to get a preview of how the menu item will look like before you save the update.