Section 5 contains provisions relating to the establishment and termination of joint investigation teams and in relation to the agreement governing the establishment of such teams. A joint investigation team can be established for a specific purpose and for a limited period which can be extended for such periods as are agreed by the competent authorities concerned. A team can operate for as long as is necessary for the purpose of conducting the investigation concerned and parts of the team can operate in more than one member state at the same time. Provision is also made for member states to join a team which has already been established. The agreement to establish the team can be amended to reflect changing needs in relation to any of these matters. The final subsection of this section allows a joint investigation team to be terminated when the purposes for which it was established have been achieved or when there is no further benefit to be gained from its continued operation.