Body doubling is known within the ADHD community and entails performing a task in the presence of another. More details here: https://www.healthline.com/health/adhd/body-double-adhd
It helps to engage motivation by using another person as the proxy. I wrote a bit about how I think it works here: https://doubleapp.xyz/blog/body-doubling-proxy
The technique goes way beyond just ADHD applications for executive functions and is something we tend to do anyways, e.g., running with a friend, studying in a group, etc.
It solves an issue for myself and I truly want to help others with the approach by making a way to stay accountable through the help of others.