[Solved] How to create a hidden forum

[avixansa]

So i have 2 paid groups in my forum 
one is a premium and one is a platinum 

Now can it be done that the premium users just does not see the forum which is meant for platinum 

Also i want to restrict the guest and registered members to see if any such forum exists ... , i have unchecked all the view and posts options but still as a guest and as a registered member i m able to see those .. 

Any Help