On the project page for Samtavla you can find a lot of information about the development of the project: Innovation Project Samtavla - Department of Education.
In UV's podcast series Learning, professor at the Department of Education, Ingvill Rasmussen, and Kjerstin Søreide Kvaavik, a teacher at Hovedgården secondary school in Asker, discuss how technology can help teachers and students have good conversations in the classroom (Norwegian link).
IDEA has contributed by developing a number of help and guidance videos about Samtavla (Norwegian link) that simply explain how to use the tool.