After your page is completed you can save it as a Dreamweaver Template: File Save As Template.This must be in a Locked (un-editable) Region, which ensures that the menu will propagate to all pages that are based on the template.Dreamweaver calls these include files "library" files and they are stored in the assets of your Web site in the Files tab.Before you can create a library item, you need to create a Dreamweaver site.The menu will be added to the selected editable region and the PMM CSS and Java Script files will be linked in the document's editable If you do not find these regions in the head of your page, open your DWT file and add them back in.Whenever you edit a Dreamweaver Template file, Dreamweaver updates all local files based on that Template.Both are linked assets: when you edit a library item or template, Dreamweaver updates all documents that use those assets.
If you've ever built a site with more than around 10 pages, you'll recognize the value in having shared include files that you can edit once and update your entire site.
A way to do this is copy the site over to another drive that is accessible to others in the company I'm working in.
The problem is, I copied (ctrl a) & (ctrl c) and pasted all files into another folder (on another drive)...
Unfortunately, this is not possible with straight HTML.
You can do it with other technology, but that usually requires that you have server technology like SSI or PHP or that you learn Java Script.