Hey @Doris S Racheal from the support engineer team here 

At the moment, Intercom does not support the ability to customize the default Help Center message.  But I totally understand where you're coming from here and think you should have more control and flexibility in this. I would love to pass this along as a feature request for the product team!

This is one of the reasons we have only applied an audience rule to a couple of  articles.

It’s a fantastic tool to prevent certain guides coming up in a search for certain users. However, I don’t like the fact that someone accessing an article via hyperlink, when they don’t match its rules, it appears as a broken link.

This is especially problematic if we want to link to a guide from an outside source (even just an email) as someone clicking on the URL likely won’t be logged in, and therefore article just looks like a broken link. 

Ideally, in my case I’d like there to be an option for the articles not to appear listed in a search or on the Help Center if user doesn’t match its rules, but be accessible if accessed via a link etc.