No. 24 of 2019 Data Protection [Subsidiary] (3) The notice referred to under sub-regulation (1) shall specify options available to resolve a complaint including determining the complaint through alternative dispute resolution mechanisms specified in the Act and these Regulations. 12. Joinder of parties (1) Where it appears to the Data Commissioner, or by an application by either the complainant or the respondent, that it is necessary that a person becomes a party to a complaint, the Data Commissioner may order that person to be enjoined as a party. (2) A person who has sufficient interest in the outcome of a complaint may apply to the Office for leave to be enjoined in the proceedings prior to the hearing of the complaint. (3) An application under sub-regulation (1) shall include — Joinder of parties. (a) the names of the parties to which that application relates; (b) the name and address for service of the person wishing to be enjoined; (c) the grounds the applicant relies on to be enjoined; (d) a copy of any relevant document in support of the application; and (e) the relief sought. 13. Investigations of a complaint (1) In investigating a complaint, the Data Commissioner may, subject to section 57 of the Act— (a) issue summons in Form DPC 4 set out in the Schedule requiring the attendance of any person at a specified date, time and place for examination; (b) examine any person in relation to a complaint; (c) administer an oath or affirmation on any person during the proceedings; (d) require any person to produce any document or information from a person or institution; and (e) on obtaining warrants from the court, enter into any establishment or premises and conduct a search and may seize any material relevant to the investigation. (2) Upon completion of the investigation, the Data Commissioner shall prepare an investigation report. (3) In conducting investigations under this regulation, the Data Commissioner shall be guided by the provisions of the Fair Administrative Action Act, 2015 (No. 4 of 2015) 14. Outcome of investigation (1) The Data Commissioner shall, upon the conclusion of the investigations, make a determination based on the findings of the investigations. (2) A determination under sub-regulation (1) shall be in writing and shall state— (a) the nature of the complaint; (b) a summary of the relevant facts and evidence adduced; (c) the decision and the reasons for the decision; (d) the remedy to which the complainant is entitled; and (e) any other relevant matter. (3) The remedies contemplated under sub-regulation (2) (d) may include— (a) issuance of an enforcement notice to the respondent in accordance with the Act and these Regulations; (b) issuance of a penalty notice imposing an administrative fine where a respondent fails to comply with the enforcement notice; (c) dismissal of the complaint where it lacks merit; (d) recommendation for prosecution; or 8