Restricting Access To Dashboard

Hello:

We ran out of time the other day during the online support chat with Jude. He suggested I continue the conversation via a support ticket.

I began with "Can you recommend a plugin and or other way to setup the dashboard so a logged in admin can only see a specific plugin or two? Kind of like a sub-admin? Restricting access to the majority of the admin dashboard."

Jude suggested I visit...

http://aristeides.com/blog/restrict-access-wordpress-dashboard/

... and ...

http://gregrickaby.com/create-mu-plugin-for-wordpress/

I began that process but was getting error messages. This looked like a good solution, if I can figure out errors, but before investing more time I wanted to confirm there is not a better way to manage all aspects of the admin dashboard. Seems like such an obvious need I'm surprised there is not an all encompassing solution already built?

Thank you!
Loren