gulp Live reload for server side

Question

I have a developed gulp file with both browser-sync and live reload. this gulp file works perfectly for my requirements. for the base idea, I have a root folder in my Apache server and inside it I have my project folders.

--public
   ---proj1
   ---proj2

I'm using my gulp file to watch and build project folder and live reload. currently I'm using browser-sync:

browserSync.init({
    proxy: {
          target: "localhost/newTest/public", // can be [virtual host, sub-directory, localhost with port]
          ws: true // enables websockets
      }
      });

every changes done inside the 'public' folder, will affect the live reload. if I have opened both projects in two separate windows and do some changes on one project both windows are refreshing(live-reloading). I do not need that to happen. only one window should be live-reloading. how can I do it.

reason:

I want to implement this to server side level for many users, how can I do it? A change from a user should not affect other users.