global presets for all pages, logo, menu, footer, etc

Is there a way to create a logo, top menu, possibly a header, footer, and make it global, to all pages, regardless of what AI creates? It would save a tonne of time, and you would get the reassurance that the links would not just change, or have to redo them page by page. If I want to change the logo, I want to do it for the entire site, not page by page. This is not practical at all. It should be a priority. If I want to change the top menu, it needs to be done to every single page. That is just not right. If you sell a service for complete websites, you need to provide at least the most basic functionality, please.