Using buttons in elementor kits

Hello, various elementor kits contain pages prepared like a single course course archive. However, there is no coding involved in the buttons on these pages, such as registering for the course or purchasing the course. How do we define features such as buy a course or register for a course on an empty button? Is a css attribute required or a shortcode required?
te?ekkürler.
?rnek Kit:
https://elements.envato.com/coursey-online-courses-elementor-template-kit-RGVB944