How do I apply a secondary menu on a specific page without changing it globally?

@tverdokhlib1 , is there any way to do it without copying a template or doing anything in code? I see the risk when you copy a template this will no longer be updated from master theme and also I would need a developer to achieve this.
On the page Set up site navigation menus it says that I an assign a secondary menu to a specific page. What is the best way?
Thanks,
rh