Board Thread:Support Requests - Getting Technical/@comment-6858788-20150731211818/@comment-4018164-20150731213352

The short answer: you don't. While communities are free to enable wikia's chat, they may still not limit it accessibility, such as making an edit limit, per the customization policy.

Over the Club Penguin Wiki, we got a permission by the staff members back in October 2014, to add a chat limit. Despite that, several months ago, one of the staff members deleted the script per the customization policy.