Transnational mobility is a powerful learning tool to access new knowledge and strengthen linguistic and intercultural skills. Up to this day, support for mobility projects has helped to develop a number of transferable and adaptable tools leading to a visible increase of initiatives. But the European mobility of apprentices remains very low (only 1%). It is much less than in higher education since an apprentice is faced with additional obstacles inherent in apprenticeship/sandwich courses. Thus, the project Euro-DIM aims to provide a transferable and adaptable system to integrate mobility into vocational education and training programs. It relies on existing tools and methods and it will be tested in three partner countries in the sector of the optics-eyewear and dental technicians.