Dashboard structure

What is the best way to create a dashboard structure with a header and sidebar. My project will have multiple pages. Do I need to put the sidebar on all of them? What if you need to change something at all? Or is there an easier way to do this but I haven’t learned how yet?

You can use the sidebar and content from ‘Layout’ in the ‘Add’ panel

You can also use Multi-page sections from the same ‘Add’ panel to have the same sidebar everywhere

I will read the documentation on how to use this. Thank you for now.