Can i use plugins such that the WPMU Dev Dashboard+other plugin updates cannot be managed by the use

Hi

I want to use WPMU Dev Dashboard and install WPMU Dev plugins, as well as some other plugins - however, I dont want the end user to be able to administer plugin updates. (End user has a child site under my WPMU install).

Also I dont want the end user(having a child site in my WPMU install) to be able to access the WPMU dashboard itself.

How do I do the above?

Thanks,
Arvind.