To add a technician to an existing TechIDManager system do the following.
Within 1 hour of activating the technician, in a default setup, they will have unique accounts on each domain, and all their usernames/passwords will be available in their TechIDClient on their device. No one else will be able to see their usernames/passwords.
In a more complicated setup, the combination of TechGroups, DomainGroups, and RightsGroups that the technician is assigned in on the TechIDPortal will control which rights they have on which domains.