Hi Micapet,
Thank you for contacting us!
We are unfortunately unable to provide support through our Pre-Sales forum channel, but you can head over to The Events Calendar WordPress.org support forums for assistance and answers.
If you have a PRO license, you can log into your account and get assistance through the PRO forums. If you need to reset your password, you can do so here. This will send an email to the account used when you initially registered for the support forums.
Just to get you started, you can try adding the following code to your site:
https://gist.github.com/geoffgraham/39d59bf67175e9b93bda
You can add this to your child theme‘s functions.php file, or with a plugin.
I hope this helps!
Patricia