The mandate of the Secretariat is set out in Article 2002.3 of the NAFTA and reads:

The Secretariat shall:

  a. provide assistance to the Commission;
  b. provide administrative assistance to:
i.  panels and committees established under Chapter Nineteen (Review and Dispute Settlement in Antidumping and Countervailing Duty Matters), in accordance with the procedures established pursuant to Article 1908;
ii. panels established under this Chapter [Institutional Arrangements and Dispute Settlement Procedures], in accordance with procedures established pursuant to Article 2012; and 
  c. as the Commission may direct:
i.  support the work of other committees and groups established under this Agreement; and  
ii. otherwise facilitate the operation of this Agreement.