How to change FIXICC Agent password

The credentials for incoming connections from FIXICC are configured in file:
# default admin user
admin = NewAdminPassword, adminRole

# user 'guest' with the 'readOnly' role
# multiple roles are allowed
guest = NewGuestPassword, readOnlyRole

The credentials for outgoing connections to FIX engines (FIX Antenna C++, FIXEdge) are configured in the file
Monitoring.AdminSession.AdminClient.Username = NewAdminSessionUsername
Monitoring.AdminSession.AdminClient.Password = NewAdminSessionPassword