Parallel test execution using multiple local headless browsers

This is a snippet from the script.

I am launching a remote browser and then assigning it to a variable called browser which i use for the page objects:

function headlessLogin(env, user) {
  
  //Setup and launch headless browser
  var url = env;
  var server = "localhost";
  var capabilities = {
    "browserName": ProjectSuite.Variables.browser,
    "screenResolution": "1920x1080"
  };

  Browsers.RemoteItem(server, capabilities).Run(url);
  var browser = Sys.Browser("Remote");
  
  //Enter User
  var page = browser.Page("https://login.microsoftonline.com/e7520e4d-d5a0-488d-9e9f-949faae7dce8/oauth2/v2.0/authorize*");
  page.Wait();
  page.FindElement("//input[@name='loginfmt']").Click();