Adding a Standard Link to Content

How do I link these new topic child pages to the journeys?  

There are two steps required: 

1. Adding Redirects on the new child topic pages 

We add a redirect so when the user clicks on this page from the Journey parent page, the page link redirects them internally to the correct page within the website, whilst keeping the user within the correct Journey Page

2. Adding the new page to the related content of the relevant parent Journey Page 

We do this, so the new page displays as a link on the specific Journey parent page