Question Access level between forum categories

Hi All,
I am using Kunena 1.5.12.
I have one question...

I create two parent categories ( A & B ) and I want everybody to be able to view it (without having to login).... And I also create two group ( also A & B ).
The question is, is it possible for me to create a forum with below scenario:-
1) Group A & B can view both of the categories without having to login.
2) But after login, Group A can still view both of the categories, but he/she can only post new topics in Category A. And same goes as B, whereby people from Group B can view both of the forum categories, but only can post new topics in Category B.

I had go through the table that I got from Kunena Wiki and from my understanding, I cannot do so because once the user is registered, he/she can post new topics.
Below is the table image:



Could someone help me?
Maybe it can be done and I'm only having a little bit misunderstanding...

Anybody can help me here?
I really2 hope to get a reply...

I had tried to create a few scenarios with different settings in my forum, but so far no luck in doing the scenario that I had posted earlier.