Hi,

1. Could you please create ~/master directory in your project file system?
2. Could you please copy ~/CMSPages/login.aspx and ~/CMSPages/login.aspx.cs to ~/master directory and rename them to index.aspx and index.aspx.cs?
3. Do not forget to change CodeFile="login.aspx.cs" to CodeFile="index.aspx.cs" in index.aspx file.
4. In index.aspx.cs file replace following line

bool splashScreenEnabled = false;

with

bool splashScreenEnabled = true;

5. Add following code to ~/AppCode/Global.aspx.cs file (at the end of public void Application_BeginRequest(object sender, EventArgs e) method)

if ((UrlHelper.CurrentURL).ToLower().Contains("/cmspages/logon.aspx")) 
{
    string url = UrlHelper.GetApplicationPath() + "/master/index.aspx?returnurl=" + QueryHelper.GetString("returnurl", string.Empty).ToLower();

    UrlHelper.Redirect(url);
}

After these steps your CMS and Site manager login page will be www.xx.yy/master/index.aspx.

Best regards,
Ivana Tomanickova