Hi, I have created a user and put him in a specific group. And there is a topic visible only to that group. Every time the user want to post a new stories, moderation is required. Could I disable the moderation? i.e. What the user posts would directly appearing when he reloads.

This would only work when the user has the 'story.edit' permission. But that would also mean the he can edit any story on your site ... bye, Dirk