[360] 27 request the co-operation and assistance of the competent authority in the other member state or states. (2) For the purpose of a request referred to in paragraph (1), the competent authority may do one or both of the following: (a) share information with the competent authority in the other member state in relation to the relevant digital service provider; (b) request the competent authority in the other member state to require the relevant digital service provider to provide to that competent authority the information necessary for the security of the provider’s network and information systems to be assessed by the CSIRT. Co-operation in respect of digital service providers whose main establishment or designated representative not in State but whose network and information systems are in State 24. (1) Where a digital service provider has its network and information systems in the State but has its main establishment in one or more member states other than the State or has designated a representative in a member state other than the State for the purposes of the Directive, the competent authority shall co-operate with the competent authority in the other member state in relation to the compliance by the digital service provider with its obligations under the Directive. (2) The co-operation and assistance referred to in paragraph (1) may include one or more of the following: (a) the sharing of information with the competent authority in the other member state in relation to the digital service provider; (b) the consideration by the competent authority of any request made to it by the competent authority in the other member state to require the digital service provider to provide the competent authority with the information necessary for the security of the provider’s network and information systems to be assessed by a relevant authority in the other member state, and (c) the appointment of one or more authorised officers for the purpose of this Regulation where the competent authority, having considered a request referred to in subparagraph (b), considers it appropriate to do so. PART 6 GUIDELINES Guidelines 25. (1) For the purpose of providing practical guidance as regards compliance by operators of essential services and relevant digital service providers with their obligations under these Regulations, the Minister may, from time to time and