The Klett digital licenses are named user licenses and are usually assigned to an individual learner.
This means that the learning results can only be reset by the course instructor at the individual exercise level. When the learner has completed the interactive tasks, the system saves the results - this is the basis of the learning progress management and thus the evaluation at the skill level. If another learner logs in with the same access data, he can see the results of his predecessor AND can no longer practice the tasks that have already been completed.