Trying to edit the Home 2 Graduate Programs Carousel with Elementor, you'll notice this is a Testimonial Carousel element and each slide item contains an Elementor template:

The easiest way to access these templates is to mouse-hover the "Edit with Elementor" link on the top Toolbar and locate the Home 2 Program Slider/ item 1-5: 

Clicking on it will redirect you to the template's content: 

You can also access the templates from Dashboard > Templates > Saved Templates: 

Make your customizations, following this guide: Guide to Vamtam Elementor Builder