The event is held on a precise date and probably at a precise time, so we cannot sell tickets if the event has already begun. We will write a timed checkout to ensure that the tickets can't be sold after a specific configured time.
Create a new product by choosing the Ticket Product type:
Do not forget to give a name, description, price, and category, set it to be in stock, and link it to a website.
You should be able to see the product page, as follows: