Once you have completed DATIA’s Designated Employer Representative Train the Trainer Course, you can apply to take the Certified Designated Employer Representative Exam to become a Certified - Designated Employer Representative Trainer (C-DERT), you may hold training courses for your client company DERs and other DERs in your area using materials provided by DATIA. Once they have completed a course with your professional instruction, the DERs may take an exam and become certified through DATIA.  (Application materials will be handed out at the course).