J-BusinessDirectory - Business without category (SOLVED)

I'm starting to developing my website and using this great extension, discovering the many functions and adjusting to my needs. 

My actual question is about the category function. I need to add many categories - if I add a new category, it's saved and ok. But when I select to some business, the category doesn't show up at the frontpage, just in the details page. 

I'm using the BETA version, 4.0 - I've tested the stable version, but some functionalities just exists in the new version... There's some problem about the categories in the BETA version that still in developing?

Thanks in advance.

I didn't notice the check box at each category...  

If the checkbix is unmarked, the category stills shows up at business edit, but not in the box filter - in the search results.

Resolved!