As I said earlier, the act does not prescribe a specific mechanism to be used by the Governor in Council. One possibility would be to use the Inquiries Act, but that's not required under the Emergencies Act.
Evidence of meeting #3 for Declaration of Emergency in the 44th Parliament, 1st Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was inquiry.
A video is available from Parliament.