Configure Microsoft's Remote Desktop Connection Manager

Group Properties – Logon Credentials tab

Now, let's go back to the Tree tab's Default Group Settings button. When you click this button, it opens a dialog box that allows you to establish a number of default settings for the group, including Logon Credentials, Access To Local Sources such as sound, and whether or not a Terminal Services gateway server needs to be used for the connections. This figure shows the Logon Credentials tab. You can override this setting in the individual server connections, if necessary.