Nope the paint brush is not what I was looking for. But thanks for the reply.
Basically stencils really helps eliminate repetition and a way faster way to get task done.
For example. Lets say you are doing house designs for a living. Start with a floor plan
and be able to pick a shower, toilet, bath etc etc from a library and place them in
the bathroom move them around and so on. The same goes for network design
as I have attached a file in my original post for you to take a peek at.