How do I limit privileges or assign a Super Admin user to a Single Network in a MultiNetwork install

Hello,

On a multiNetwork install, I want to allow a specific admin to create sites only on the specific network he administrates.

My preferred method would be to assign Super Admin privileges to a user and then limit access to one Network.

Alternatively, I would turn on the ability for logged in users to create sites. But I would like the ability limit which network the site is added to.

Are there any plugins that do this? Or, has anyone here had any luck applying this scenario?

Best Regards,
Michael