Forum:Searching wikia answers

How you do enable word search through a wikia site using the page search function? I thought it might be an automatic delayed index, but 24 hrs later, I still can't search through the site. Then I read something about manually adding tags and even found a page about it, but I don't see any way to add the tags. I'd rather have it done automatically anyway. I know you can do it. You can do it on this site. I just can't figure out how.