Trying to edit with Elementor the "What We Do" section of Numerique Home 2, you'll notice that it's a Tabs widget, and each tab 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 tabs' templates:



Clicking on each of them will redirect you to the template's content. Here, you can select the post category for each tab. Make your customizations following this guide: Guide to Vamtam Elementor Builder 


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