Hi Nuno,
Are you looking to display a list of event categories that users can click on and see all of the events for that category? There is unfortunately not an out of the box way to do this – sorry for the bad news there! Depending on how many event categories you have and how often you change those categories, your best bet may be to make the list manually, and then link the category names to the category pages. I’d recommend taking a look at this article for more details on categories and linking to the category pages.
Another option would be to do a customization. While we don’t do customizations, we’ll be happy to answer questions and help point you in the right direction if you’d like to give it a shot! Our themer’s guide and list of functions should also be helpful, and this post has an example that might help get you started. We also have a list of recommended developers that you could contact if you’d like to have the code done for you.
I’m sorry I don’t have a more straightforward solution for you here, but I hope this helps! Please let me know if you have any questions.
Thanks,
Jennifer