To become a business angel league member on the CrowdedHero platform, you need to fulfill two essential conditions. First of all, you need to go through the KYC procedure of professional investors - to do this, contact us. Second, the investor must make an investment of at least 10,000 euros in one company. By following these steps, you will automatically be accepted into CrowdedHero's Angel League - the answer to the question of who are business angels is that simple.