If you use phpbb go to administration panel. Then select forums. Then type the name of the forum you want in the create new forum bar near the bottom of the page and click create forum. Use the following settings. -Forum Type: Catagory.
-Parent Forum: No Parent
-Copy Permissions From: Do Not Copy
-Enable Active Topics: Yes
-Now that you have set them click submit
Now go back to manage forums and click on the forum that you just created. Once inside the forum that you just created type the name of the forum you want to create in there using the add forum bar in the bottom right corner. Now click create new forum. Use the following settings.Forum Type: Forum
Parent Forum: The forum you created earlier
Copy Permissions From: Do Not Copy
List Forums In Legend: Select Yes
List Subforum In Parent Forum’s legend: Select No
Enable Post Review: Select Yes
Enable Search Indexing: Select Yes
Enable Topic Icons: Select No
Display Active Topics: Select No
Topics Per Page: Set This To 0
Enable Auto Pruning: Select No
Auto Prune Frequency: 1 Day
Auto Prune Post Age: 7 Days
Auto Prune Post Viewed Age: 7 Days
Prune Old Posts: Select No
Prune Announcements: Select No
Prune Stickers: Select No
Now click submit and return to your forum index. It may look like mine. Check mine out by clicking
here