2.4 Is the formation of a consortium foreseen in all phases and is it a continuous condition in all phases?

[ upd 06.7.2022] In general, in case of joint tenders there can be no change in the composition of a group that tendered at the beginning of the PCP procedure in the later PCP phases. Exceptions may be applied, in which case they are clearly detailed in the iProcureSecurity PCP Call for Tender.
The Tender Documents are available here https://innovationprocurement.com/tenders/7/show/pre-commercial-procurement-of-innovative-triage-management-systems-strengthening-resilience-and-interoperability-of-emergency-medical-services