Posts at Featured Slider

@Ivan: In Catch Kathmandu Pro, if you want posts to automatically add in Slider then you have to go to “Appearance => Theme Options => Featured Slider => Slider Options” and then select slider type as “Category Slider” and save changes. Then go to “Appearance => Theme Options => Featured Slider => Featured Category Slider Options” and select the category.

Note: after you select the category, make sure that the post in that category have featured image. As this category slider take the post featured image, title and excerpt text. For adding featured image, see this http://catchthemes.com/blog/videos-blog/video-series-adding-featured-image-wordpress-postpage/

For more, check our theme instructions page at http://catchthemes.com/theme-instructions/catch-kathmandu-pro/

@Ivan: Sorry you cannot set different image, but you can choose the image size that will display in your archive page. For that go to “Appearance => Theme Options => Content Featured Image Options” and choose the image size that you like and save changes.