using (IWebDriver driver = new ChromeDriver(@"<my path>"))
{
    driver.Manage().Window.Maximize();

    driver.Navigate().GoToUrl("<my url>");

    var wait = new WebDriverWait(driver, TimeSpan.FromSeconds(600));
    var userName = wait.Until(x => x.FindElement(By.Id("UserName")));

    userName.SendKeys("sbft41");

    IWebElement pass = driver.FindElement(By.Id("Password"));
    pass.SendKeys("sbft41");
}