The BID is the official management tool for all agents involved in the development of practical training in workplaces for vocational and occupational training students. The BID actively, quickly and securely communicates with the 13 Catalan chambers, the Council of Chambers, vocational training centers and the central services and territorial delegations of the Department of Education and the Employment Service. The BID, as a management tool, acts as an intranet. It therefore has restricted access to the different agents.