Restrict access to Support not working

Hi,

I want to give access to Support only at a certain level so I have networkdeactivated this plugin: http://screencast.com/t/mPCYPKt7uS8J

But it doesn't appear in the Premium Plugins area for me to set the level: http://screencast.com/t/3Vh3IKbT3

Please advise.

I have granted support access should you need it.

Thanks,
Justi