Hey there,
I am really sorry for the delay of this reply as it is a public holiday for us here.
You have to untick this option Inherit ACL permission from this category from the global category ACL settings from the category permission page if you want to separate your moderator team handle different categories on the site.
If only 1 team moderator, then you can set the global category ACL setting from the backend > Easydiscuss > setting > categories
Hope this will help.