Hello,
Unfortunately, in the wp version, you can use only 1 or 2 column layout for the blog posts. I think that the easiest option will be use our GK News Show Pro widget. - you should use i.e. 4 rows and 3 columns in the widget settings. If you'll have problem with that, you can send me a PM with the backend access to your website, then I'll try to help you with that.