I setup a multisite in a domain. It seems to be working, except for a few things. If I install a plugin or theme and network activate it, I'm not seeing it in my test sites or other sites. I can install plugins from the network admin dashboard, but I can't see these in the plugin section of my sub-domains. Even if I choose Network Activate. I have tried with Network deactivate as well. How do I activate or setup a theme or plugin, in one of the sub-domains?