Part of my help Center is private, the other part is public.
thanks to the custom I created sidebar menu to subsections from the site and also have in content subsection links.

But if  a non logged in person tries to navigate to some of those subsections they get a "content does not exsits" page.  Is it possible to redirect them to the sign in page the same way it works for articles?  

like this one : https://support.adomik.com/portal/en/kb/adomik/user-guides/data-engine