The mechanism that is set out in the bill is that there are three criteria in clause 6 that will indicate when a digital news intermediary is subject to the legislation. The specifics of those three criteria will be determined through Governor in Council regulations. The CRTC does not have a role in setting those criteria.
Once those criteria are set, the mechanism in the bill is that digital news intermediaries are expected to come forward and identify whether they believe they meet those thresholds or not, and, if they meet those thresholds, they are to indicate to the CRTC that they meet those thresholds.
The CRTC has information-gathering power to ensure compliance with that mechanism, but that's the mechanism that is foreseen by the bill.
If it's helpful, the division of power at the regulatory level between the Governor in Council and the commission is set out in clauses 84 and 85, where you have the specific list of regulatory powers that are given to each entity.