Manuel Schmalstieg on "[Plugin: W3 Total Cache] How does Network policy on multsite work?"

I'm installing W3 total cache on multisite, and network-activated it in the wp-admin/network pages.

Now, I would like to make some CloudFront CDN settings that are site-specific, not shared by the whole network.

In the General Settings, there is a checkbox saying "Network policy: Apply the settings above to the entire network." - I would like to untick that box, but it's greyed out cannot be unticked.

Is there a hidden configuration that I missed, or is that an upcoming feature that isn't available in the current version (Version 0.9.2.9)?

http://wordpress.org/extend/plugins/w3-total-cache/