Track 3 was a new format to the TCR conference in 2019, aiming to take the idea of relational engagement to the next level. We have decided to retain this format for TCR 2021. Whereas the Track 2 format was introduced a few years ago to bring prior data collection into the conference process, Track 3 is designed to focus on measurable TCR impact on well-being. The Track 3 sessions will have a strong relational engagement element, typically emerging from long-term collaborations that existed prior to the conference. Hence, there is no open call for new track members in this category.