NCS Cirrus LT User Manual page 66

Username/Password and Remember Password
Here is where you will enter your logon credentials. These fields can change
depending on your connection method. For example, if you are using CAC
you will be asked for a PIN instead.
If you would like the GUI to retain your username for convenience, check
the Remember username to enable this feature.
66 Cirrus LT User Manual v2.3 - Chapter 4