I've been looking around for a while now and still can't find a solution so am asking here. I have a site where anyone can sign up and create their own blog as a subdirectory of the main website.
What I want is for every blog to have the same navigation (in essence the same header), footer and sidebar as the main website of the network. I couldn't find what I was looking for in the WordPress Codex. Has anyone found a solution to this before or can point me in the right direction?