Ad Sharing No settings currently available

Hello, I just installed and network activate the plugin Ad Sharing

When I go into Network Admin > settings > advertising its show the settings

But when i go into another site When I go to settings > advertising. I get No settings currently available

http://awesomescreenshot.com/0f33faan0e

How do I setup the plugin so it works only on an specific site?

Thanks in advance!
W.