Change Password — /C new password

If this parameter is specified, Content Manager OnDemand changes the password for the user after a successful logon.

This parameter can only be specified if the /S, /U, and /P parameters have also been specified.

C:\<install dir>\arsgui.exe /S pikes  /U user1
 /P pass1 /C newpass

where <install dir> is your OnDemand Client installation directory path.