The Classes + Events page in Debebe Theme https://debebe.vamtam.com/classes-events/ is built using WooCommerce products. 


Each tab contains a particular template with products.  




To begin, navigate to the Toolbar > Edit with Elementor > Classes - Item 1



Or go to Templates > Saved Templates > Classes - Item 1 > Edit with Elementor. Control the layout, conditions, rules and styles of the template. 


Read more about the Elementor Templates





The date picker is part of the Extra Product Options plugin:






Read more about setting up the WooCommerce Shop & Archive pages