On January 11, 2023, AeroSTREAM members from widening countries (Croatia and Bosnia and Herzegovina) met for an internal workshop on the different ways of preparing and managing national and European projects - with a special focus on Croatian and Bosnian regulations. In the first part of the workshop, AeroSTREAM coordinator Prof. Stjepan Bogdan reported on experiences from previous European projects in which UNIZG-FER was involved. It was a very productive meeting with many useful questions and discussions. In the second part of the workshop, the group reviewed AeroSTREAM activities and plans for members from widening countries in the following months.