If there is not a single procedure or case in a topic the Overview page for the topic will be empty. In this case, it can make sense to select another page to be the landing page of the topic.
Open to edit the overview page. In the right panel select the “Document” tab, and then go down to the “Redirect” dropdown, see figure 1. Add the url you want to have as the landing page for the topic, then click “Publish”.
Now, when a user go to the topic, the user will arrive at the url that you specified. You will also see that “Overview” is no longer in the left side menu.