Hi! There is no real integration between a sprint taskboard and a kanban in taiga.io Doing so could end up being a nightmare because both flows work differently. Nothing prevents you from having two open sprints with two separate sprint taskboards so trying to sync both workflows with different "entities" and different metric is very difficult. Typically, you would use either Scrum or Kanban and "feel the kanban" with the sprint taskboard, but when you active both you are entering uncharted land in some way. So, no, you're not doing it wrong, it's just complicated. But, basically, to answer your question: a team can move a user story (Scrum) to done when all its tasks are in a state that is considered "done". Thanks a lot fro trying taiga, we love this kind of feedback. We will soon launch a mailing list to centralize these type of questions :)