EOC Pass through Authentication

So when setting up a new user for EOC,  there is a place to specify the account for Orion Instance 1 and Orion Instance 2.   All of these user accounts are AD accounts.  So these accounts will change their password every 60 days.   My question is,   If the username and password are the same on EOC as the other two orion instances is there no way to pass the user name and password that you used to log into EOC automatically to the orion instances?