Annex 4. Power of attorney  POWER OF ATTORNEY  Call for tenders  XXX/XX/XX/20XY/XYZ  - [TITLE OF THE PROCEDURE]  The undersigned:  – Signatory (Name, Function, Company, Registered address, VAT Number) having the legal capacity required to act on behalf of his/her company,  HEREBY AGREES TO THE FOLLOWING:  1) To submit a joint tender as a member of a group of economic operators (the Group),  constituted by Company 1, Company 2, Company N (Group members), and led by Company  1 (Group leader), in accordance with the conditions specified in the tender specifications and  the terms specified in the tender to which this Power of attorney is attached. 2) If the  Contracting authority  awards the contract resulting from this call for tenders to the  Group  on the basis of the joint tender to which this power of attorney is attached, all  Group  members shall be considered parties to the contract in accordance with the following  conditions:  (a) All  Group members  shall be jointly and severally liable towards the  Contracting  authority  for the performance of the contract.  (b) All  Group members  shall comply with the terms and conditions of the contract and  ensure the proper delivery of their respective share of the services and/or supplies subject  to the contract.  3) Payments by the  Contracting authority  related to the services and/or supplies subject to the  Contract shall be made through the bank account of the  Group leader :  [Provide details on  bank, address, account number].  4) The  Group members  grant to the  Group leader  all the necessary powers to act on their behalf  in the submission of the request to participate/tender and the conclusion of the contract,  including: (a) The  Group leader  shall submit the request to participate/tender on behalf of all  Group  members  and indicate in the cover letter the name and e-mail address of an individual - single point of contact authorised to communicate officially with the  Contracting  authority  in connection with the submitted request to participate/tender on behalf of all  Group members,  including in connection with all relevant questions, clarification  requests, notifications, etc., that may be received during the evaluation, award and until  the contract signature. (b) The  Group leader  shall sign any contractual documents — including the contract, and  amendments thereto — and issue any invoices related to the performance of the contract  on behalf of all  Group members .  Page  27  of  32