Hi Marcos.
No problem with the language (although I’m not totally clear what you’re needing).
You can create events with The Events Calendar (free).
You can assign free/RSVP-type tickets to those events with Event Tickets (free).
And you can buy the Event Tickets Plus upgrade to enableĀ selling tickets for your events via an eCommerce plugin like WooCommerce.
I hope this clarifies things for you.
Last but not least, we have a pretty great Refund Policy so you can buy one or many of our add-ons and thoroughly test them.
Let me know if you have any follow-up questions.