Higher education institutions should promote sustainable development, including teaching activities. University students should receive training on equality, to build inclusive and diverse spaces both inside and outside the institution. In particular, there is a compelling need for gender mainstreaming in engineering studies as a further measure to work towards reducing the gender gap in this area. Co-education allows a systematic approach to teaching-learning processes that consider gender, equality, and diversity in educational institutions, although these approaches are scarce in engineering education. This work describes the workshop "Strategies to gender mainstreaming in Engineering studies" organized into the 2021 IEEE Global Engineering Education Conference, as well as the main results and conclusions obtained.