the problem with making things "red" or "blu" is the style of the architecture. Blu has an industrial theme and uses concrete and metal while red is a more agricultural theme, so making a new "red" building would look completely different if I wanted to fit the style . If you want to make the 2 of those buildings on the same map you need to change all the doors, switches, and buttons name, and thier outputs... all you need to do is add an X to the end of each name, each "parent", and all the outputs. Unfortunately, it will be alot of work, but you can do it and the second building should work without problems. Sorry I kind of packed alot of entities in there to make all the doors and the elevator work right. The two buttons on the desk are very important too, so dont overlook them.