Separate Groups

hi forum

i’ve a little problem (i think) but i didn’t get a solution (i’m going mad!)
on my site i want to have 3 categories A-blog,B-blog, C-blog and
3 groups A-team, B-team , C-team

I want that all the authors (and editors) from group A-Team can only write (and edit) posts in the A-Blog and there posts come automate
under A-Blog and so on

… not a big think, but …..

the rest of the right system is quite simple:

everybody can read everything

for building the groups I use the plugin ‘user-access-manager’ UAM

big thanks in advance