I’m trying to enable plugins on member sites. I checked the “Pludins” box, but member site admins cannot install site-specific plugins. So, it looks like the documentation is both out of date and wrong.
I do not believe that site admin have the ability to install plugins. The documentation does not say that either. It states ‘This means your users won’t have access to the plugin admin panel inside their dashboard unless you first enable access to plugins network wide.’
Once the plugins are installed by a super (network) admin, the super admin can allow site admins to enable/disable plugins. When plugins are “network activated”, the plugin is active and a site admin cannot de-active.
Hope that clears up your understanding of plugin management.