[xwiki-users] Deny Public registration Wiki Workspaces

I really love the look and use of the xwiki products, but the lack of documentation and broken functionality is very frustrating. After finally getting smtp authorisation working in Enterprize I find the email which is generated is not forming URLs properly - grrr. So now I'm back to exploring Workspaces milestone 1.2 and I have found that setting Public Registration to Allow or Deny makes no difference - registration is just a matter of supplying a name and email address and you're in. No admin approval required. This is not acceptable for an admin setup intended for staff only. Can anyone explain to me how this might be fixed please? Cheers Chris Ellis Lorne-Aireys Inlet P-12 College