Control with 1 pc 10 or 20 other pc

How can I control with 1 pc with the mouse 10 or 20 other pc ?

So what I do with the mouse on 1 pc happens on all other pc only when I want too click on shoea for example and shoes are showing on every pc on another website itt must goes with the mouse too the shoes on all pages

So the mouse must know too go too the right things I want like shoes on all that pages with the pc I control all the 10 or 20 pc

I pay for someone that know how we can do this.