Technical or specialized knowledge
151 A Tribunal may engage, on a temporary basis, the services of counsel or notaries and other persons having technical or specialized knowledge to assist it in its work, prescribe their duties and the conditions of their employment and, with the Treasury Board’s approval, fix their remuneration and expenses.
Source
https://laws-lois.justice.gc.ca/eng/acts/C-15.1/section-151.htmlCanonical document at the regulator. Always cite this URL — not the Vantage detail page — in compliance evidence.