Complex sentence: BETA's main projects, MEU Strasbourg and MEU Online, both have their own organising teams, which follow a similar structure, each being supervised by a Director-General and a Deputy Director-General appointed by the BETA Board.
Split into simpler sentences: BETA's main projects, MEU Strasbourg and MEU Online, both have their own organising teams which follow a similar structure. Each project is supervised by a Director-General and a Deputy Director-General who are appointed by the BETA Board.