I have an existing WordPress site and want to add the OSClass service to users of that site. So, I installed OSC in a directory domain.com/resources. The result is I have two instances of WordPress running now.

Is it possible to take the header/footer and navigation menus from my original site and replace the OSClass header/footer so that all visits to OSClass would allow the user to navigate back to the primary site?

Any recommendations on how I would do that most effectively, or another best practice if you could explain, I would appreciate the help.

Thank you!

I'll add the terms embed and iframe here, even though I don't think that would be a wise solution, just in case anyone else searches for this in the future.

You can update front end theme and customize it to your primary site a bit