I'm trying to manually upgrade a subsite, however Prosites

I'm trying to manually upgrade a subsite, however Prosites does not have any settings option in the plugin or in the settings area of a site whether you're in the admin area or in the manage network area and click "Edit Settings" to do this...

I'm curious if its possible to manually upgrade a site to a specific defined level from Pro-sites. The issue I have is we have some sub sites that company owned and we need them to be under unlimited level, but this isn't possible for some reason. And if a client were to manually pay for the site I'd like the option to manually upgrade them...

If not, how long before this can be a feature? Any way to hack the plugin to support this?

Thanks for your help!