WordPress MU

I'm developing a website using wordpress MU, I want to restrict users in the use of plugins or themes that were installed in WPMU ... but the restriction to some users only.

user1 can only use the themes xxx and user2 can not use these themes xxx ..

how to do it

You can use a plugin that restricts certain themes and plugins to specific users or groups of users.

what plugin can do that restricts certain themes and plugins to specific users or groups of users??

thanks.. its work