Editing the Snax plugin on Bimber theme

I have Snax plugin with Bimber theme, look at this page Napiši vest – Teenstar.rs .
I want to split the post format Priča-Blog-Vest , it would be the same names but seperate, and they would still be text posts, just like 3 different categories(formats) like Audio and Meme it would be Priča sepereted from Blog and same with Vest , if you understand me.
How can i do this?