Categories definition

Hello I using that code on my web page for showing news in front page. But now I have blogs in categories and I want add in my code categories, I don’t want to show all blogs but only one categor.

[container padding=”0″ classname=”blog” margin=” 5px”][title type=”simple” size=”small”]Zadnje novice[/title][blog_posts type=”slider” items_per_column=”2″ ][/blog_posts][/container]

Can someone know how to add that in my code.