In Selenium web automation, test automation services uses following to minimize the firefox window using JAVA:
driver.manage().window().setPosition(new Point(-2000, 0))
Test automation services also use below mentioned steps :
Dimension n = new Dimension(360,592);
driver.manage().window().setSize(n);
Using C#, below mentioned step can be used set the position of browser window:
driver.Manage().Window.Position = new System.Drawing.Point(x, y);