After initial acceptance into the HDI Certified Instructor program, certified instructors can earn authorization to instruct additional courses. The certified instructor must attend an instructor-led course for each course they desire to be authorized to deliver, and pass the related exam at the mastery level. Once they pass the exam, they can apply to be authorized to deliver that course.

The HDI Certified Instructor workshop is required for only the first course as part of becoming an HDI Certified Instructor.

Some courses may pre-authorize the instructor to deliver a related course. For example, anyone authorized to deliver the HDI Support Center Analyst (HDI-SCA) course is automatically authorized to deliver the HDI Customer Service Representative (HDI-CSR) course. See the Course Specific Prerequisites for additional requirements.