Helen McEntee (Meath East, Fine Gael) | Oireachtas source

Yes, it is set out in Part 8. Section 43(3) states:

(3) Before submitting a draft code of practice to the Minister under this section, the Commissioner of the Garda Síochána—

(a) shall cause an assessment of the impact of the proposed draft code on the human rights of individuals affected by the code [ ... ]

(b) shall consult with the following [ ... ]

(i) the Minister;

(ii) the Policing Authority;

(iii) the Garda Síochána Ombudsman Commission;

(iv) the Garda Síochána Inspectorate;

(v) the Data Protection Commission;

(vi) the Irish Human Rights and Equality Commission,

(c) may, where appropriate, consult with the Local Government Management Agency,

(d) shall ensure that the draft code of practice is published on the website of the Garda Síochána in order to allow persons a period that he or she shall [ ... ] make written representations in relation to the draft code, and

(e) may consult with any other person appearing to the Commissioner of the Garda Síochána to have an interest in the matter

This means basically that everybody and anybody can engage on this.