Board Thread:General Discussion/@comment-126761-20150624184726/@comment-126761-20150626155519

The easiest way, I suggest, is to check out the communities linked in the post above, where it is already live.

Essentially, rather than being included in the main article, the notice templates (flags) will be controlled by a special UI instead. This means you can simply check a box to add or remove a flag on a page. Special:Flags lists which templates will be affected. Anything marked as 'Contributor' on that list would be hidden for anon visitors.

I hope that helps! Let us know if you'd like more details.