I want to be able to update multiple instances of the same model at once.
At one time I was working on a project with a friend and I was able to work on one model, and all other copies of it would update to include the changes. So say if I was working on a house, and there were 10 copies of that house around the map, I could work on one, add or door or something, and all other copies would have that door added.
I do not know what my friend was using. I have tried contacting them but they do not seem to be very active anymore.
Thank you for any help in advance.