Theme Templates define how page will look depending on its type. Let’s say, you want to change a style of the title for a single page template, make it smaller or change color or change its position. Well, just open Single Page template in Theme Templates and change whatever you want. You can customize templates for all page types including archives. You can create different design for Blog Page, Category Archive Page or Search Results Page. Check Pagex Documentation to find more.
Navigate to Pagex > Theme Templates in order to create and change layouts. For Theme Templates there are special elements in a Builder. For example for Archive Pages you need to use elements like: Archive Title, Archive Description, Posts Loop. These all are standard elements of the WordPress archive templates, the Builder simply helps you control design without actual modifying PHP templates and CSS styles.
To change what template layout will be applied to the WordPress page type, navigate to Pagex > Settings. Here you can specify Theme Templates for different type of pages.