I think you misunderstood what he was saying...
There are actually a number of private forums on this web site. Some belong to teams, some belong to groups. Whether you can see the private forum(s) is dependant upon team memberships and AirsoftArizona membership.
For example, SWAIRTAC has two forums here. One is public - everyone can see it and one is private - only SWAIRTAC team members can see it. SWAIRTAC has a team leader and he controls access to their private forum.
I have also added an "AirsoftArizona Members" forum that's invisible to all unless you're in the "AirsoftArizona" members group. The group is for those who are paid AA members. To join, you have to be a paid AA member and then request membership by clicking on the "Teams/Groups" link above (top righthand corner) and request to be added to the group. Membership requests are verified against the current AA member database and then approved.
Anyone can request that a team forum (private or public) be set up, as has always been the case. [smilie=armata_pdt_01.gif]