Hi s6carlo,
Thanks for reaching out!
That will be an awesome customization!
1. Yes, that is the function that will give you the number of available tickets left.
2. That icon only shows up if something is misaligned between the ticket capacity / stock availability. If you don’t see it, then everything should be fine.
It usually shows up if a ticket has been cancelled or refunded or deleted and the stock settings between the event / ticket page and the WooCommerce product page are not aligned.
This article will give you further information on that: https://theeventscalendar.com/knowledgebase/refund-cancel-tickets-order/
3. You’re welcome. 😉
Let me know if you have further questions.
Cheers,
Andras