Multiple Active Directory Domains
If your network includes multiple Active Directory domains or you add a new domain to your Active Directory infrastructure, the product will not automatically discover the additional domains and they wont show up in the environment. Nintex Automation adds the default domain based on the domain of the account used to install the product; you must add, edit or delete additional domain manually, using the management site.
You can add multiple AD Domains using Management, see the User Guide for more information.