The tables that need to be changed when processing a function are as follows:
Add a Group:
- Add to phpbb_group
- Add to phpbb_acl_group - Permissions
Add a User:
- Add to phpbb_users
- Add to phpbb_acl_users - Permissions
- Update phpbb_users_group
Add a Forum:
- Add to phpbb_forum
- Add to phpbb_acl_group - Permissions
Add a Post:1st Post
- Add to phpbb_post
- Add to phpbb_topic
- Add to phpbb_topics_posted
All other posts
- Add to phpbb_post
- Add to phpbb_topics_posted
Each time you change these tables you must clear the cache before attempting to access the forum again or the old data and permissions will still be active.