go to Admin CP > Permissions > modify the Moderator Group and check what permissions you have set for that group.

The "Moderator" group is already there. In addition to inserting their name on that particular board, you also need to set that groups permissions. If you dont, they cant moderate the board.

no no no.. I wasnt saying you needed to add them to that membergroup - listing their name as the moderator on the board page puts them in that group automatically. What I was saying was, you still have to set the permissions of that group so that they "can" moderate it. Changing the settings from global to local doesnt set them for you, it just changes how you access the group to modify it.  The permissions for that group need to be set just like all your other groups . The default settings for that group are probably set up the way you want them, but its always good practice to double check.