I need to have two people working in the same dwg, basically at the same time. We call it an Assembly Plan. Everything is done in model space. I want to be able to have each of them basically work in the same dwg and at the end of the day, BOTH of their work is saved in one dwg, but no double lines, etc.
AutoCAD doesn't work on that way.even if you use xref,it will be useless.